Fix some more 'make check' warnings, ones that appear on non-Linux
platforms.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@9238 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/perf/tinycc.c b/perf/tinycc.c
index 5bef066..0a59cc3 100644
--- a/perf/tinycc.c
+++ b/perf/tinycc.c
@@ -20606,7 +20606,7 @@
 void rt_error(ucontext_t *uc, const char *fmt, ...)
 {
     va_list ap;
-    unsigned long pc;
+    unsigned long pc = 0;  // shut gcc up
     int i;
 
     va_start(ap, fmt);