Fix typo in comment.

llvm-svn: 235723
diff --git a/llvm/lib/Analysis/BranchProbabilityInfo.cpp b/llvm/lib/Analysis/BranchProbabilityInfo.cpp
index 8799a71..036da5f 100644
--- a/llvm/lib/Analysis/BranchProbabilityInfo.cpp
+++ b/llvm/lib/Analysis/BranchProbabilityInfo.cpp
@@ -191,7 +191,7 @@
     return false;
 
   // Build up the final weights that will be used in a temporary buffer, but
-  // don't add them until all weihts are present. Each weight value is clamped
+  // don't add them until all weights are present. Each weight value is clamped
   // to [1, getMaxWeightFor(BB)].
   uint32_t WeightLimit = getMaxWeightFor(BB);
   SmallVector<uint32_t, 2> Weights;