Minor review updates

Author: Leporacanthicus

flang/include/flang/Parser/parse-tree.h

@@ -3915,7 +3915,7 @@ struct OmpDeviceTypeClause {
   WRAPPER_CLASS_BOILERPLATE(OmpDeviceTypeClause, DeviceTypeDescription);
 };
 
-// OMP 5.2 15.8.3 extened-atomic, fail-clause ->
+// OMP 5.2 15.8.3 extended-atomic, fail-clause ->
 //    FAIL(memory-order)
 struct OmpFailClause {
   WRAPPER_CLASS_BOILERPLATE(

flang/lib/Semantics/check-omp-structure.cpp

@@ -2485,8 +2485,8 @@ void OmpStructureChecker::CheckAtomicCaptureConstruct(
 void OmpStructureChecker::CheckAtomicMemoryOrderClause(
     const parser::OmpAtomicClauseList *leftHandClauseList,
     const parser::OmpAtomicClauseList *rightHandClauseList) {
-  int numMemoryOrderClause = 0;
-  int numFailClause = 0;
+  int numMemoryOrderClause{0};
+  int numFailClause{0};
   auto checkForValidMemoryOrderClause =
       [&](const parser::OmpAtomicClauseList *clauseList) {
         for (const auto &clause : clauseList->v) {