Due to label merging, the last label for an invoke

may be the same as the first label for the following
invoke.  Remove a micro-optimization which was wrong
in this case.

llvm-svn: 41720

llvm/lib/CodeGen/DwarfWriter.cpp

@@ -3098,10 +3098,9 @@ private:
 
         unsigned BeginLabel = MI->getOperand(0).getImmedValue();
         assert(BeginLabel && "Invalid label!");
-        if (BeginLabel == LastLabel) {
+
+        if (BeginLabel == LastLabel)
           MayThrow = false;
-          continue;
-        }
 
         RangeMapType::iterator L = PadMap.find(BeginLabel);