Cleanup: Do not check pointers before deleting them.

core/src/fpdfapi/fpdf_font/ttgsubtable.h

Index: core/src/fpdfapi/fpdf_font/ttgsubtable.h
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.h b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
index 69ccc3e45333ec250939664294f93e78cc0ef9bf..1b18f82d6e22f78844c434ae779fae604bc29915 100644
--- a/core/src/fpdfapi/fpdf_font/ttgsubtable.h
+++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
@@ -282,9 +282,7 @@ private:
         }
         ~TSingleSubstFormat1()
         {
-            if(Coverage) {
-                delete Coverage;
-            }
+            delete Coverage;
         }
     private:
         TSingleSubstFormat1(const TSingleSubstFormat1&);
@@ -300,12 +298,8 @@ private:
         }
         ~TSingleSubstFormat2()
         {
-            if(Coverage) {
-                delete Coverage;
-            }
-            if(Substitute) {
-                delete[] Substitute;
-            }
+            delete Coverage;
+            delete[] Substitute;
         }
     private:
         TSingleSubstFormat2(const TSingleSubstFormat2&);