Fix a small bug in the infinite loop prevention logic

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/fop-0_20_2-maintain@195686 13f79535-47bb-0310-9956-ffa450edef68

src/org/apache/fop/fo/flow/Block.java

@@ -96,6 +96,7 @@ public class Block extends FObjMixed {
         }
 
         if (this.marker == START) {
+            noLayoutCount=0; // Reset the "loop counter".
 
             // Common Accessibility Properties
             AccessibilityProps mAccProps = propMgr.getAccessibilityProps();