format: Unify support_format error handling

Always return r to unify style for easier audits.

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>

libarchive/archive_read_support_format_ar.c

@@ -125,11 +125,9 @@ archive_read_support_format_ar(struct archive *_a)
 	    NULL,
 	    NULL);
 
-	if (r != ARCHIVE_OK) {
+	if (r != ARCHIVE_OK)
 		free(ar);
-		return (r);
-	}
-	return (ARCHIVE_OK);
+	return (r);
 }
 
 static int

libarchive/archive_read_support_format_iso9660.c

@@ -491,11 +491,9 @@ archive_read_support_format_iso9660(struct archive *_a)
 	    NULL,
 	    NULL);
 
-	if (r != ARCHIVE_OK) {
+	if (r != ARCHIVE_OK)
 		free(iso9660);
-		return (r);
-	}
-	return (ARCHIVE_OK);
+	return (r);
 }
 
 

libarchive/archive_read_support_format_warc.c

@@ -168,11 +168,9 @@ archive_read_support_format_warc(struct archive *_a)
 	    NULL,
 	    NULL);
 
-	if (r != ARCHIVE_OK) {
+	if (r != ARCHIVE_OK)
 		free(warc);
-		return (r);
-	}
-	return (ARCHIVE_OK);
+	return (r);
 }
 
 static int