Fix memory leaks in the PDFium fuzzer.

pdf/pdfium/fuzzers/pdfium_fuzzer.cc

Index: pdf/pdfium/fuzzers/pdfium_fuzzer.cc
diff --git a/pdf/pdfium/fuzzers/pdfium_fuzzer.cc b/pdf/pdfium/fuzzers/pdfium_fuzzer.cc
index 2bb17c2f470452b4ddb184e5692f6621a92ccc70..b0d7b5de26c250081ce4da2df3a444d5bb3136b7 100644
--- a/pdf/pdfium/fuzzers/pdfium_fuzzer.cc
+++ b/pdf/pdfium/fuzzers/pdfium_fuzzer.cc
@@ -55,33 +55,31 @@ static bool RenderPage(const FPDF_DOCUMENT& doc,
                        const FPDF_FORMHANDLE& form,
                        const int page_index) {
   FPDF_PAGE page = FPDF_LoadPage(doc, page_index);
-  if (!page) {
+  if (!page)
     return false;
-  }
+
   FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
   FORM_OnAfterLoadPage(page, form);
   FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_OPEN);
 
-  double scale = 1.0;
+  const double scale = 1.0;
   int width = static_cast<int>(FPDF_GetPageWidth(page) * scale);
   int height = static_cast<int>(FPDF_GetPageHeight(page) * scale);
 
   FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, 0);
-  if (!bitmap) {
-    return false;
-  }
+  if (bitmap) {
+    FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
+    FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
 
-  FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
-  FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);
+    FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
 
-  FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0);
-
-  FPDFBitmap_Destroy(bitmap);
+    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;
 }
 
 static void RenderPdf(const char* pBuf, size_t len) {