Merge branch 'cc/maint-bisect-paths'

* cc/maint-bisect-paths:
  bisect: error out when passing bad path parameters

bisect.c

@@ -986,6 +986,12 @@ int bisect_next_all(const char *prefix)
 		exit(1);
 	}
 
+	if (!all) {
+		fprintf(stderr, "No testable commit found.\n"
+			"Maybe you started with bad path parameters?\n");
+		exit(4);
+	}
+
 	bisect_rev = revs.commits->item->object.sha1;
 	memcpy(bisect_rev_hex, sha1_to_hex(bisect_rev), 41);