Enum definitions are generated without a trailing comma (-pedantic).

Change-Id: I07cd28e5915a0526614db85f894f27a5bd27f3bb
Tested: on Windows.

src/idl_gen_cpp.cpp

@@ -105,7 +105,8 @@ static void GenComment(const std::string &dc,
     auto &ev = **it;
     GenComment(ev.doc_comment, code_ptr, "  ");
     code += "  " + enum_def.name + "_" + ev.name + " = ";
-    code += NumToString(ev.value) + ",\n";
+    code += NumToString(ev.value);
+    code += (it + 1) != enum_def.vals.vec.end() ? ",\n" : "\n";
   }
   code += "};\n\n";
 

tests/monster_test_generated.h

@@ -11,7 +11,7 @@ namespace Example {
 enum {
   Color_Red = 1,
   Color_Green = 2,
-  Color_Blue = 8,
+  Color_Blue = 8
 };
 
 inline const char **EnumNamesColor() {
@@ -23,7 +23,7 @@ inline const char *EnumNameColor(int e) { return EnumNamesColor()[e - Color_Red]
 
 enum {
   Any_NONE = 0,
-  Any_Monster = 1,
+  Any_Monster = 1
 };
 
 inline const char **EnumNamesAny() {