fix [1969200] Uninitialized double passed to Math.sqrt()
diff --git a/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp b/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp
index 5c522c5..21f87e3 100644
--- a/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp
+++ b/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp
@@ -219,7 +219,7 @@
     
 
     mDpiX = mNativeWindow->xdpi;
-    mDpiX = mNativeWindow->ydpi;
+    mDpiY = mNativeWindow->ydpi;
     mRefreshRate = fbDev->fps; 
     
     char property[PROPERTY_VALUE_MAX];