Disable selection when nothing selected.

 Bug 6059606

Change-Id: I2c9acaa601e38a2cd0eec516709aa63f31ce0e29

Author: George Mount

core/java/android/webkit/WebView.java

@@ -9492,10 +9492,11 @@ private void updateTextSelectionFromMessage(int nodePointer,
             }
         }
         nativeSetTextSelection(mNativeClass, data.mSelectTextPtr);
-        if (data.mSelectTextPtr != 0) {
-            mIsCaretSelection = (mFieldPointer == nodePointer)
-                    && (mFieldPointer != 0)
-                    && (data.mStart == data.mEnd);
+
+        if (data.mSelectTextPtr != 0 &&
+                (data.mStart != data.mEnd ||
+                (mFieldPointer == nodePointer && mFieldPointer != 0))) {
+            mIsCaretSelection = (data.mStart == data.mEnd);
             if (!mSelectingText) {
                 setupWebkitSelect();
             } else if (!mSelectionStarted) {