Fixed warning concerning implicit conversion from a NULL pointer
constant to an unsigned int.  We now just directly assign the literal 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43459 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Bitcode/Reader/Deserialize.cpp b/lib/Bitcode/Reader/Deserialize.cpp
index 8fba9d2..ff0dd44 100644
--- a/lib/Bitcode/Reader/Deserialize.cpp
+++ b/lib/Bitcode/Reader/Deserialize.cpp
@@ -108,7 +108,7 @@
   unsigned PtrId = ReadInt();
   
   if (PtrId == 0) {
-    PtrRef = NULL;
+    PtrRef = 0;
     return;
   }