Fix an assert in store-to-load forwarding.

The code does the right thing, but the assert should be checking that
the load we're about to replace has the same type as the value we're
replacing it with.

This was exposed by changes to inline generic code.

Swift SVN r19921

lib/SILPasses/LoadStoreOpts.cpp

@@ -297,7 +297,7 @@ tryToForwardAddressValueToUncheckedAddrToLoad(SILValue Address,
   if (!ExtractPath)
     return SILValue();
 
-  assert(ExtractPath.getType() == UADCI->getType().getObjectType() &&
+  assert(ExtractPath.getType() == LI->getType().getObjectType() &&
          "Must have same types here.");
 
   return ExtractPath;