Avoid bogus compiler warning.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3634 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/memcheck/mc_main.c b/memcheck/mc_main.c
index 8299d83..a301265 100644
--- a/memcheck/mc_main.c
+++ b/memcheck/mc_main.c
@@ -1105,7 +1105,7 @@
                                    Char* s, Addr str )
 {
    MC_ReadResult res;
-   Addr bad_addr;
+   Addr bad_addr = 0;   // shut GCC up
    /* VG_(message)(Vg_DebugMsg,"check is readable asciiz: 0x%x",str); */
 
    VGP_PUSHCC(VgpCheckMem);