Update some code.google.com links

llvm-svn: 318115
diff --git a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
index c8e772d..424bd7f 100644
--- a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -2911,7 +2911,7 @@
 
   void visitLandingPadInst(LandingPadInst &I) {
     // Do nothing.
-    // See http://code.google.com/p/memory-sanitizer/issues/detail?id=1
+    // See https://github.com/google/sanitizers/issues/504
     setShadow(&I, getCleanShadow(&I));
     setOrigin(&I, getCleanOrigin());
   }