Merge to XFA: Add safe FX_Alloc2D() macro

core/src/fpdftext/fpdf_text.cpp

Index: core/src/fpdftext/fpdf_text.cpp
diff --git a/core/src/fpdftext/fpdf_text.cpp b/core/src/fpdftext/fpdf_text.cpp
index e1902a3764b45cfc7043be53a44227628ccba03c..ddb0b324cee66e3e25e2d23a1858c7f7c8ed8589 100644
--- a/core/src/fpdftext/fpdf_text.cpp
+++ b/core/src/fpdftext/fpdf_text.cpp
@@ -57,10 +57,9 @@ void CTextPage::ProcessObject(CPDF_PageObject* pObject)
     CPDF_TextObject* pText = (CPDF_TextObject*)pObject;
     CPDF_Font* pFont = pText->m_TextState.GetFont();
     int count = pText->CountItems();
-    FX_FLOAT* pPosArray = FX_Alloc(FX_FLOAT, count * 2);
-    if (pPosArray) {
-        pText->CalcCharPos(pPosArray);
-    }
+    FX_FLOAT* pPosArray = FX_Alloc2D(FX_FLOAT, count, 2);
+    pText->CalcCharPos(pPosArray);
+
     FX_FLOAT fontsize_h = pText->m_TextState.GetFontSizeH();
     FX_FLOAT fontsize_v = pText->m_TextState.GetFontSizeV();
     FX_DWORD space_charcode = pFont->CharCodeFromUnicode(' ');