Add a null pointer check to CPDF_CalRGB::v_Load().

core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp

Index: core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
index 9e6ca67041e1883981eb66447069c550c8c60a4b..101a1979680b95e37b24fb12c5eb428f140854b4 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_colors.cpp
@@ -348,6 +348,9 @@ public:
 FX_BOOL CPDF_CalRGB::v_Load(CPDF_Document* pDoc, CPDF_Array* pArray)
 {
     CPDF_Dictionary* pDict = pArray->GetDict(1);
+    if (!pDict)
+        return FALSE;
+
     CPDF_Array* pParam = pDict->GetArray(FX_BSTRC("WhitePoint"));
     int i;
     for (i = 0; i < 3; i ++) {