strrchr: actually, last one was finding "" in "any" at pos 0,
should find at pos LAST...

diff --git a/libbb/strrstr.c b/libbb/strrstr.c
index 088d9f4..f61dd51 100644
--- a/libbb/strrstr.c
+++ b/libbb/strrstr.c
@@ -24,7 +24,7 @@
 	char *r = NULL;
 
 	if (!needle[0])
-		return (char*)haystack;
+		return (char*)haystack + strlen(haystack);
 	while (1) {
 		char *p = strstr(haystack, needle);
 		if (!p)