Fix memory leaks in pdfium_test.

samples/pdfium_test.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include <list>
@@ skipping 490 matching lines @@
     SendPageEvents(form, page, events);
 
   double scale = 1.0;
   if (!options.scale_factor_as_string.empty()) {
     std::stringstream(options.scale_factor_as_string) >> scale;
   }
   int width = static_cast<int>(FPDF_GetPageWidth(page) * scale);
   int height = static_cast<int>(FPDF_GetPageHeight(page) * scale);
   int alpha = FPDFPage_HasTransparency(page) ? 1 : 0;
   FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, alpha);
-  if (!bitmap) {
-    fprintf(stderr, "Page was too large to be rendered.\n");
-    return false;
-  }
-  FPDF_DWORD fill_color = alpha ? 0x00000000 : 0xFFFFFFFF;
-  FPDFBitmap_FillRect(bitmap, 0, 0, width, height, fill_color);
-  FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
+  if (bitmap) {
+    FPDF_DWORD fill_color = alpha ? 0x00000000 : 0xFFFFFFFF;
+    FPDFBitmap_FillRect(bitmap, 0, 0, width, height, fill_color);
+    FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
 
-  FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
-  int stride = FPDFBitmap_GetStride(bitmap);
-  const char* buffer =
-      reinterpret_cast<const char*>(FPDFBitmap_GetBuffer(bitmap));
+    FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
+    int stride = FPDFBitmap_GetStride(bitmap);
+    const char* buffer =
+        reinterpret_cast<const char*>(FPDFBitmap_GetBuffer(bitmap));
 
-  switch (options.output_format) {
+    switch (options.output_format) {
 #ifdef _WIN32
-    case OUTPUT_BMP:
-      WriteBmp(name.c_str(), page_index, buffer, stride, width, height);
-      break;
+      case OUTPUT_BMP:
+        WriteBmp(name.c_str(), page_index, buffer, stride, width, height);
+        break;
 
-    case OUTPUT_EMF:
-      WriteEmf(page, name.c_str(), page_index);
-      break;
+      case OUTPUT_EMF:
+        WriteEmf(page, name.c_str(), page_index);
+        break;
 #endif
-    case OUTPUT_PNG:
-      WritePng(name.c_str(), page_index, buffer, stride, width, height);
-      break;
+      case OUTPUT_PNG:
+        WritePng(name.c_str(), page_index, buffer, stride, width, height);
+        break;
 
-    case OUTPUT_PPM:
-      WritePpm(name.c_str(), page_index, buffer, stride, width, height);
-      break;
+      case OUTPUT_PPM:
+        WritePpm(name.c_str(), page_index, buffer, stride, width, height);
+        break;
 
 #ifdef PDF_ENABLE_SKIA
-    case OUTPUT_SKP: {
-      std::unique_ptr<SkPictureRecorder> recorder(
-          (SkPictureRecorder*)FPDF_RenderPageSkp(page, width, height));
-      FPDF_FFLRecord(form, recorder.get(), page, 0, 0, width, height, 0, 0);
-      WriteSkp(name.c_str(), page_index, recorder.get());
-    } break;
+      case OUTPUT_SKP: {
+        std::unique_ptr<SkPictureRecorder> recorder(
+            (SkPictureRecorder*)FPDF_RenderPageSkp(page, width, height));
+        FPDF_FFLRecord(form, recorder.get(), page, 0, 0, width, height, 0, 0);
+        WriteSkp(name.c_str(), page_index, recorder.get());
+      } break;
 #endif
-    default:
-      break;
+      default:
+        break;
+    }
+
+    FPDFBitmap_Destroy(bitmap);
+  } else {
+    fprintf(stderr, "Page was too large to be rendered.\n");
   }
-
-  FPDFBitmap_Destroy(bitmap);
   FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_CLOSE);
   FORM_OnBeforeClosePage(page, form);
   FPDFText_ClosePage(text_page);
   FPDF_ClosePage(page);
-  return true;
+  return !!bitmap;
 }
 
 void RenderPdf(const std::string& name,
                const char* pBuf,
                size_t len,
                const Options& options,
                const std::string& events) {
   IPDF_JSPLATFORM platform_callbacks;
   memset(&platform_callbacks, '\0', sizeof(platform_callbacks));
   platform_callbacks.version = 3;
@@ skipping 266 matching lines @@
   }
 
   FPDF_DestroyLibrary();
 #ifdef PDF_ENABLE_V8
   v8::V8::ShutdownPlatform();
   delete platform;
 #endif  // PDF_ENABLE_V8
 
   return 0;
 }