simple fix for resizing too small causing an index out of range crash

Signed-off-by: coolguy1842 <coolguy1842.deport391@passfwd.com>

launcher/ui/instanceview/VisualGroup.cpp

@@ -66,6 +66,9 @@ void VisualGroup::update()
             rows[currentRow].height = maxRowHeight;
             rows[currentRow].top = offsetFromTop;
             currentRow++;
+            if(currentRow >= rows.size()) {
+                currentRow = rows.size() - 1;
+            }
             offsetFromTop += maxRowHeight + 5;
             positionInRow = 0;
             maxRowHeight = 0;