test_MMH: fix memory leak in unit test (#8357)
test_MMH: fix memory leak in unit test (#8357)


vmamidi/trafficserver,SolidWallOfCode/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,pbchou/trafficserver,vmamidi/trafficserver,SolidWallOfCode/trafficserver,vmamidi/trafficserver,SolidWallOfCode/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver,duke8253/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,vmamidi/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,pbchou/trafficserver,duke8253/trafficserver,duke8253/trafficserver,duke8253/trafficserver,pbchou/trafficserver,vmamidi/trafficserver