fixup! stash/rebase: default to the non-builtin versions

In Git for Windows v2.20.0, we will want to default to the built-in
versions.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

builtin/rebase.c

@@ -55,7 +55,7 @@ static int use_builtin_rebase(void)
 	cp.git_cmd = 1;
 	if (capture_command(&cp, &out, 6)) {
 		strbuf_release(&out);
-		return 0;
+		return 1;
 	}
 
 	strbuf_trim(&out);

builtin/stash.c

@@ -1529,7 +1529,7 @@ static int use_builtin_stash(void)
 	cp.git_cmd = 1;
 	if (capture_command(&cp, &out, 6)) {
 		strbuf_release(&out);
-		return 0;
+		return 1;
 	}
 
 	strbuf_trim(&out);