Move the empty remote pkglist check up.

This avoids any unnecessary calculations, and also ensures that the
output for an unavailable package from an empty remote package
repository is the same as it was prior to the previous commit.

actions.c

@@ -442,6 +442,11 @@ pkgin_install(char **opkgargs, int do_inst, int upgrade)
 	char		h_psize[H_BUF], h_fsize[H_BUF], h_free[H_BUF];
 	struct		stat st;
 
+	if (SLIST_EMPTY(&r_plisthead)) {
+		printf("%s\n", MSG_EMPTY_AVAIL_PKGLIST);
+		return EXIT_FAILURE;
+	}
+
 	/* transform command line globs into pkgnames */
 	if ((pkgargs = glob_to_pkgarg(opkgargs, &rc)) == NULL) {
 		printf(MSG_NOTHING_TO_DO);

impact.c

@@ -368,12 +368,6 @@ pkg_impact(char **pkgargs, int *rc)
 	char		tmpicon;
 #endif
 
-	if (SLIST_EMPTY(&r_plisthead)) {
-		printf("%s\n", MSG_EMPTY_AVAIL_PKGLIST);
-		*rc = EXIT_FAILURE;
-		return NULL;
-	}
-
 	TRACE("[>]-entering impact\n");
 
 	impacthead = init_head();