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

core/src/fpdfdoc/doc_annot.cpp

Index: core/src/fpdfdoc/doc_annot.cpp
diff --git a/core/src/fpdfdoc/doc_annot.cpp b/core/src/fpdfdoc/doc_annot.cpp
index 0ddcb2305ed2103ac4a97ba0a4c44ff3ea4203e7..4ccce21f1c5b649d46462906f04e24eec1938965 100644
--- a/core/src/fpdfdoc/doc_annot.cpp
+++ b/core/src/fpdfdoc/doc_annot.cpp
@@ -339,6 +339,9 @@ CPDF_PageObject* CPDF_Annot::GetBorder(FX_BOOL bPrint, const CPDF_RenderOptions*
                 dash_count ++;
             }
             pGraphState->m_DashArray = FX_Alloc(FX_FLOAT, dash_count);
+            if (pGraphState->m_DashArray == NULL) {
+                return NULL;
+            }
             pGraphState->m_DashCount = dash_count;
             FX_DWORD i;
             for (i = 0; i < pDashArray->GetCount(); i ++) {
@@ -349,6 +352,9 @@ CPDF_PageObject* CPDF_Annot::GetBorder(FX_BOOL bPrint, const CPDF_RenderOptions*
             }
         } else {
             pGraphState->m_DashArray = FX_Alloc(FX_FLOAT, 2);
+            if (pGraphState->m_DashArray == NULL) {
+                return NULL;
+            }
             pGraphState->m_DashCount = 2;
             pGraphState->m_DashArray[0] = pGraphState->m_DashArray[1] = 3 * 1.0f;
         }
@@ -435,6 +441,9 @@ void CPDF_Annot::DrawBorder(CFX_RenderDevice* pDevice, const CFX_AffineMatrix* p
                 dash_count ++;
             }
             graph_state.m_DashArray = FX_Alloc(FX_FLOAT, dash_count);
+            if (graph_state.m_DashArray == NULL) {
+                return ;
+            }
             graph_state.m_DashCount = dash_count;
             FX_DWORD i;
             for (i = 0; i < pDashArray->GetCount(); i ++) {
@@ -445,6 +454,9 @@ void CPDF_Annot::DrawBorder(CFX_RenderDevice* pDevice, const CFX_AffineMatrix* p
             }
         } else {
             graph_state.m_DashArray = FX_Alloc(FX_FLOAT, 2);
+            if (graph_state.m_DashArray == NULL) {
+                return ;
+            }
             graph_state.m_DashCount = 2;
             graph_state.m_DashArray[0] = graph_state.m_DashArray[1] = 3 * 1.0f;
         }