Buffer audit. Resize a few.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14824 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vgdb-invoker-ptrace.c b/coregrind/vgdb-invoker-ptrace.c
index 1d43390..e9d1392 100644
--- a/coregrind/vgdb-invoker-ptrace.c
+++ b/coregrind/vgdb-invoker-ptrace.c
@@ -226,7 +226,7 @@
 static 
 char *status_image (int status)
 {
-   static char result[256];
+   static char result[256];  // large enough
    int sz = 0;
 #define APPEND(...) sz += snprintf (result+sz, 256 - sz - 1, __VA_ARGS__)