[IR] Strip trailing whitespace. NFC

llvm-svn: 336194
diff --git a/llvm/lib/IR/LegacyPassManager.cpp b/llvm/lib/IR/LegacyPassManager.cpp
index 46bfba7..cd130ba 100644
--- a/llvm/lib/IR/LegacyPassManager.cpp
+++ b/llvm/lib/IR/LegacyPassManager.cpp
@@ -648,7 +648,7 @@
     // of dependencies.
     AnalysisUsage AU;
     P->getAnalysisUsage(AU);
-    
+
     AUFoldingSetNode* Node = nullptr;
     FoldingSetNodeID ID;
     AUFoldingSetNode::Profile(ID, AU);