Make bitmask an unsigned type.

llvm-svn: 192163
diff --git a/lld/lib/Core/LinkingContext.cpp b/lld/lib/Core/LinkingContext.cpp
index 0bfef16..5d5d34f 100644
--- a/lld/lib/Core/LinkingContext.cpp
+++ b/lld/lib/Core/LinkingContext.cpp
@@ -76,7 +76,7 @@
   return true;
 }
 
-void LinkingContext::setResolverState(int32_t state) const {
+void LinkingContext::setResolverState(uint32_t state) const {
   _currentInputElement->setResolverState(state);
 }