Build fixes for gcc-2.96.  The system now builds and regtests with the
default gcc-2.96 on Red Hat 7.3.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4911 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/memcheck/mac_leakcheck.c b/memcheck/mac_leakcheck.c
index 84c57c7..4a147fd 100644
--- a/memcheck/mac_leakcheck.c
+++ b/memcheck/mac_leakcheck.c
@@ -83,7 +83,7 @@
 static Addr* get_seg_starts ( /*OUT*/Int* n_acquired )
 {
    Addr* starts;
-   Int   n_starts, r;
+   Int   n_starts, r = 0;
 
    n_starts = 1;
    while (True) {