Fixing potential crash when trying to create 0x0 bitmaps

Bug: 5926437
Change-Id: Id1284584104b1c4933525ea5e8744338718e4986
diff --git a/src/com/android/launcher2/AppsCustomizePagedView.java b/src/com/android/launcher2/AppsCustomizePagedView.java
index 039ee8a..f0c7f34 100644
--- a/src/com/android/launcher2/AppsCustomizePagedView.java
+++ b/src/com/android/launcher2/AppsCustomizePagedView.java
@@ -1107,6 +1107,8 @@
             bitmapWidth = drawable.getIntrinsicWidth();
             bitmapHeight = drawable.getIntrinsicHeight();
         } else {
+            if (cellHSpan < 1) cellHSpan = 1;
+            if (cellVSpan < 1) cellVSpan = 1;
             // Determine the size of the bitmap for the preview image we will generate
             // TODO: This actually uses the apps customize cell layout params, where as we make want
             // the Workspace params for more accuracy.