fallocate02: add a default case to avoid gcc uninitialized warning
diff --git a/testcases/kernel/syscalls/fallocate/fallocate02.c b/testcases/kernel/syscalls/fallocate/fallocate02.c
index 05939a8..69f1da2 100644
--- a/testcases/kernel/syscalls/fallocate/fallocate02.c
+++ b/testcases/kernel/syscalls/fallocate/fallocate02.c
@@ -293,6 +293,9 @@
 				fd = fdw;
 				strcpy(fname, fnamew);
 				break;
+			default:
+				tst_brkm(TCONF, cleanup, "invalid test setting");
+				return 0;
 			}
 
 			TEST(fallocate