Merge pull request #2078 from linquize/msvc

MSVC doesn't like modern code neither

examples/general.c

@@ -47,11 +47,10 @@
 // as an example.
 static void check_error(int error_code, const char *action)
 {
+	const git_error *error = giterr_last();
 	if (!error_code)
 		return;
 
-	const git_error *error = giterr_last();
-
 	printf("Error %d %s - %s\n", error_code, action,
 		   (error && error->message) ? error->message : "???");