hush: tighten up "for" variable name check.

[oweals/busybox.git] / libbb / concat_subpath_file.c

diff --git a/libbb/concat_subpath_file.c b/libbb/concat_subpath_file.c
index 6bbe49ab5d9840e396fbb051c37ebe67355486ef..313fa63cf5fc1b0aa337375e75a47c610ded5aee 100644 (file)
--- a/libbb/concat_subpath_file.c
+++ b/libbb/concat_subpath_file.c
@@ -15,9 +15,9 @@
 
 #include "libbb.h"
 
-char *concat_subpath_file(const char *path, const char *f)
+char* FAST_FUNC concat_subpath_file(const char *path, const char *f)
 {
-       if (f && *f == '.' && (!f[1] || (f[1] == '.' && !f[2])))
+       if (f && DOT_OR_DOTDOT(f))
                return NULL;
        return concat_path_file(path, f);
 }