don't allow min scale to go to infinity

When a new picture is received, the min zoom scale is set.
One of the many choices divides by draw.mMinPrefWidth, even
if it is zero. Add a check to require it to be greater than
zero before using it as a ratio component.

fixes http://b/issue?id=2138786

parent c28e3a67

core/java/android/webkit/WebView.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -4868,7 +4868,8 @@ public class WebView extends AbsoluteLayout
		mLastScale = restoreState.mTextWrapScale;
		if (restoreState.mMinScale == 0) {
		if (restoreState.mMobileSite) {
		if (draw.mMinPrefWidth > draw.mViewPoint.x) {
		if (draw.mMinPrefWidth >
		Math.max(0, draw.mViewPoint.x)) {
		mMinZoomScale = (float) viewWidth
		/ draw.mMinPrefWidth;
		mMinZoomScaleFixed = false;