[LazyValueInfo] Fix typo in comment. NFC

llvm-svn: 301655
diff --git a/llvm/lib/Analysis/LazyValueInfo.cpp b/llvm/lib/Analysis/LazyValueInfo.cpp
index ad01f7f..a98383e 100644
--- a/llvm/lib/Analysis/LazyValueInfo.cpp
+++ b/llvm/lib/Analysis/LazyValueInfo.cpp
@@ -920,7 +920,7 @@
   // value is overdefined.
   if (BB == &BB->getParent()->getEntryBlock()) {
     assert(isa<Argument>(Val) && "Unknown live-in to the entry block");
-    // Bofore giving up, see if we can prove the pointer non-null local to
+    // Before giving up, see if we can prove the pointer non-null local to
     // this particular block.
     if (Val->getType()->isPointerTy() &&
         (isKnownNonNull(Val) || isObjectDereferencedInBlock(Val, BB))) {