Fix constructor parameters shadowing member variables

Using the same name for the constructor parameter and the member
variable causes a warning that was being hidden by the use of -isystem
to include frameworks/native/include.  Prefix the parameter with an
underscore.

Bug: 31752268
Test: m -j
Change-Id: I60c7dc388999bafbb97cb42f5e0af5361df68d56
diff --git a/include/gui/OccupancyTracker.h b/include/gui/OccupancyTracker.h
index 1d15e7f..d4de8f2 100644
--- a/include/gui/OccupancyTracker.h
+++ b/include/gui/OccupancyTracker.h
@@ -45,12 +45,12 @@
             occupancyAverage(0.0f),
             usedThirdBuffer(false) {}
 
-        Segment(nsecs_t totalTime, size_t numFrames, float occupancyAverage,
-                bool usedThirdBuffer)
-          : totalTime(totalTime),
-            numFrames(numFrames),
-            occupancyAverage(occupancyAverage),
-            usedThirdBuffer(usedThirdBuffer) {}
+        Segment(nsecs_t _totalTime, size_t _numFrames, float _occupancyAverage,
+                bool _usedThirdBuffer)
+          : totalTime(_totalTime),
+            numFrames(_numFrames),
+            occupancyAverage(_occupancyAverage),
+            usedThirdBuffer(_usedThirdBuffer) {}
 
         // Parcelable interface
         virtual status_t writeToParcel(Parcel* parcel) const override;