gc: use hook library for pre-auto-gc hook

Move the pre-auto-gc hook away from run-command.h to and over to the
new hook.h library. This uses the new run_hooks() wrapper.

Signed-off-by: Emily Shaffer <[email protected]>
Signed-off-by: Ævar Arnfjörð Bjarmason <[email protected]>
Acked-by: Emily Shaffer <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: nasamuffin

builtin/gc.c

@@ -32,6 +32,7 @@
 #include "remote.h"
 #include "object-store.h"
 #include "exec-cmd.h"
+#include "hook.h"
 
 #define FAILED_RUN "failed to run %s"
 
@@ -394,7 +395,7 @@ static int need_to_gc(void)
 	else
 		return 0;
 
-	if (run_hook_le(NULL, "pre-auto-gc", NULL))
+	if (run_hooks("pre-auto-gc"))
 		return 0;
 	return 1;
 }