git-compat-util: make UNLEAK less error-prone

Commit 0e5bba5 ("add UNLEAK annotation for reducing leak false
positives", 2017-09-08) introduced an UNLEAK macro to be used as
"UNLEAK(var);", but its existing definitions leave semicolons that act
as empty statements, which will lead to syntax errors, e.g.

	if (condition)
		UNLEAK(var);
	else
		something_else(var);

would be broken with two statements between if (condition) and else.
Lose the excess semicolon from the end of the macro replacement text.

Signed-off-by: Jonathan Tan <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: jonathantanmy

git-compat-util.h

@@ -1184,9 +1184,9 @@ extern int cmd_main(int, const char **);
  */
 #ifdef SUPPRESS_ANNOTATED_LEAKS
 extern void unleak_memory(const void *ptr, size_t len);
-#define UNLEAK(var) unleak_memory(&(var), sizeof(var));
+#define UNLEAK(var) unleak_memory(&(var), sizeof(var))
 #else
-#define UNLEAK(var)
+#define UNLEAK(var) do {} while (0)
 #endif
 
 #endif