Misc typos fixes in ./lib folder

Summary: Found via `codespell -q 3 -I ../clang-whitelist.txt -L uint,importd,crasher,gonna,cant,ue,ons,orign,ned`

Reviewers: teemperor

Reviewed By: teemperor

Subscribers: teemperor, jholewinski, jvesely, nhaehnle, whisperity, jfb, cfe-commits

Differential Revision: https://reviews.llvm.org/D55475

llvm-svn: 348755
diff --git a/clang/lib/CodeGen/CGStmtOpenMP.cpp b/clang/lib/CodeGen/CGStmtOpenMP.cpp
index c92338a..4f635ef 100644
--- a/clang/lib/CodeGen/CGStmtOpenMP.cpp
+++ b/clang/lib/CodeGen/CGStmtOpenMP.cpp
@@ -2955,7 +2955,7 @@
         RedCG.emitAggregateType(CGF, Cnt);
         // FIXME: This must removed once the runtime library is fixed.
         // Emit required threadprivate variables for
-        // initilizer/combiner/finalizer.
+        // initializer/combiner/finalizer.
         CGF.CGM.getOpenMPRuntime().emitTaskReductionFixups(CGF, S.getBeginLoc(),
                                                            RedCG, Cnt);
         Address Replacement = CGF.CGM.getOpenMPRuntime().getTaskReductionItem(
@@ -3001,10 +3001,10 @@
         RedCG.emitSharedLValue(CGF, Cnt);
         RedCG.emitAggregateType(CGF, Cnt);
         // The taskgroup descriptor variable is always implicit firstprivate and
-        // privatized already during procoessing of the firstprivates.
+        // privatized already during processing of the firstprivates.
         // FIXME: This must removed once the runtime library is fixed.
         // Emit required threadprivate variables for
-        // initilizer/combiner/finalizer.
+        // initializer/combiner/finalizer.
         CGF.CGM.getOpenMPRuntime().emitTaskReductionFixups(CGF, S.getBeginLoc(),
                                                            RedCG, Cnt);
         llvm::Value *ReductionsPtr =