Exception work clean up.

Change-Id: Ide71ba25ea70b39651f80d9ff469019898a929e6
diff --git a/src/context_x86.cc b/src/context_x86.cc
index 04976a5..479b950 100644
--- a/src/context_x86.cc
+++ b/src/context_x86.cc
@@ -8,9 +8,13 @@
 namespace x86 {
 
 X86Context::X86Context() {
+#ifndef NDEBUG
+  // Initialize registers with easy to spot debug values
   for (int i=0; i < 8; i++) {
     gprs_[i] = 0xEBAD6070+i;
   }
+  eip_ = 0xEBAD601F;
+#endif
 }
 
 void X86Context::FillCalleeSaves(const Frame& fr) {