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: I7748934f1e9515176e2ae98d2c0e58d165a7a5c2
diff --git a/include/ui/Point.h b/include/ui/Point.h
index 1d7f64d..d050ede 100644
--- a/include/ui/Point.h
+++ b/include/ui/Point.h
@@ -34,7 +34,7 @@
     // Default constructor doesn't initialize the Point
     inline Point() {
     }
-    inline Point(int x, int y) : x(x), y(y) {
+    inline Point(int _x, int _y) : x(_x), y(_y) {
     }
 
     inline bool operator == (const Point& rhs) const {