Turn on -Werror=missing-declarations

Monte Goulding · montegoulding · commit df5d68ce188e · 2016-09-13T19:43:06.000+10:00
diff --git a/config/mac.gypi b/config/mac.gypi
@@ -128,6 +128,7 @@
 							'-Werror=tautological-compare',
 							'-Werror=logical-not-parentheses',
 							'-Werror=conversion-null',
+							'-Werror=missing-declarations',
 						],
 					},
 				},
diff --git a/libexternalv1/include/external.h b/libexternalv1/include/external.h
@@ -302,7 +302,7 @@ typedef enum MCInvokeStatus
 	
 	// An execution error occured while running the script
 	kMCInvokeStatusExecutionError = 2
-};
+} MCInvokeStatus;
 	
 // MCThreadCallback is the signature of the function to be invoked when a run on main thread
 // callback is requested.
