Buffer audit. Resize a few.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14824 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/helgrind/libhb_core.c b/helgrind/libhb_core.c
index 1668df8..b146e0a 100644
--- a/helgrind/libhb_core.c
+++ b/helgrind/libhb_core.c
@@ -1089,7 +1089,7 @@
 static Bool is_sane_Descr_and_Tree ( UShort descr, SVal* tree ) {
    Word  i;
    UChar validbits = descr_to_validbits(descr);
-   HChar buf[128], buf2[128];
+   HChar buf[128], buf2[128];    // large enough
    if (validbits == 0)
       goto bad;
    for (i = 0; i < 8; i++) {