Fix uninitialized variable warnings. NFCI.
diff --git a/llvm/lib/Target/ARM/ARMHazardRecognizer.h b/llvm/lib/Target/ARM/ARMHazardRecognizer.h
index b5ac694..ca02cc7 100644
--- a/llvm/lib/Target/ARM/ARMHazardRecognizer.h
+++ b/llvm/lib/Target/ARM/ARMHazardRecognizer.h
@@ -27,14 +27,13 @@
 /// ARM preRA scheduler uses an unspecialized instance of the
 /// ScoreboardHazardRecognizer.
 class ARMHazardRecognizer : public ScoreboardHazardRecognizer {
-  MachineInstr *LastMI;
-  unsigned FpMLxStalls;
+  MachineInstr *LastMI = nullptr;
+  unsigned FpMLxStalls = 0;
 
 public:
   ARMHazardRecognizer(const InstrItineraryData *ItinData,
                       const ScheduleDAG *DAG)
-    : ScoreboardHazardRecognizer(ItinData, DAG, "post-RA-sched"),
-      LastMI(nullptr) {}
+      : ScoreboardHazardRecognizer(ItinData, DAG, "post-RA-sched") {}
 
   HazardType getHazardType(SUnit *SU, int Stalls) override;
   void Reset() override;