string_match_wrk(): increase max recursion depth to 500.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1722 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vg_mylibc.c b/coregrind/vg_mylibc.c
index ef06526..853d77b 100644
--- a/coregrind/vg_mylibc.c
+++ b/coregrind/vg_mylibc.c
@@ -1026,7 +1026,7 @@
 
 static Bool string_match_wrk ( Char* pat, Char* str )
 {
-   vg_assert(recDepth >= 0 && recDepth < 250);
+   vg_assert(recDepth >= 0 && recDepth < 500);
    recDepth++;
    for (;;) {
       switch (*pat) {