Revert "Remove FX_Alloc() null checks now that it can't return NULL."

core/src/fxge/ge/fx_ge_ps.cpp

Index: core/src/fxge/ge/fx_ge_ps.cpp
diff --git a/core/src/fxge/ge/fx_ge_ps.cpp b/core/src/fxge/ge/fx_ge_ps.cpp
index e81b6bf362277d43afb2c4515e69a1c0261d1257..ad572115c56970cf279b88ea3e72438e2e947fb5 100644
--- a/core/src/fxge/ge/fx_ge_ps.cpp
+++ b/core/src/fxge/ge/fx_ge_ps.cpp
@@ -349,6 +349,9 @@ FX_BOOL CFX_PSRenderer::DrawDIBits(const CFX_DIBSource* pSource, FX_DWORD color,
         int pitch = (width + 7) / 8;
         FX_DWORD src_size = height * pitch;
         FX_LPBYTE src_buf = FX_Alloc(FX_BYTE, src_size);
+        if (!src_buf) {
+            return FALSE;
+        }
         for (int row = 0; row < height; row ++) {
             FX_LPCBYTE src_scan = pSource->GetScanline(row);
             FXSYS_memcpy32(src_buf + row * pitch, src_scan, pitch);
@@ -422,6 +425,13 @@ FX_BOOL CFX_PSRenderer::DrawDIBits(const CFX_DIBSource* pSource, FX_DWORD color,
             int src_pitch = width * Bpp;
             output_size = height * src_pitch;
             output_buf = FX_Alloc(FX_BYTE, output_size);
+            if (!output_buf) {
+                if (pConverted != pSource) {
+                    delete pConverted;
+                    pConverted = NULL;
+                }
+                return FALSE;
+            }
             for (int row = 0; row < height; row ++) {
                 FX_LPCBYTE src_scan = pConverted->GetScanline(row);
                 FX_LPBYTE dest_scan = output_buf + row * src_pitch;