static const char push_usage[] = "git-push [--all] [--tags] [-f | --force] <repository> [<refspec>...]";
-static int all = 0, tags = 0, force = 0, thin = 1;
-static const char *execute = NULL;
+static int all, tags, force, thin = 1;
+static const char *execute;
#define BUF_SIZE (2084)
static char buffer[BUF_SIZE];
-static const char **refspec = NULL;
-static int refspec_nr = 0;
+static const char **refspec;
+static int refspec_nr;
static void add_refspec(const char *ref)
{