afl-gotcpu.c: compielr warning fixed: initialize variable v2
diff --git a/src/afl-gotcpu.c b/src/afl-gotcpu.c
index 6ca7c07..6c2fa14 100644
--- a/src/afl-gotcpu.c
+++ b/src/afl-gotcpu.c
@@ -90,7 +90,7 @@
 
 static u32 measure_preemption(u32 target_ms) {
 
-  volatile u32 v1, v2;
+  volatile u32 v1, v2 = 0;
 
   u64 st_t, en_t, st_c, en_c, real_delta, slice_delta;
   s32 loop_repeats = 0;