coverity#982640 Missing break in switch

Change-Id: If2a14edafb72844061dcdd1ee3507d7a215220f1

sax/source/tools/converter.cxx

@@ -349,6 +349,7 @@ void Converter::convertMeasure( OUStringBuffer& rBuffer,
             case MeasureUnit::MM_10TH:
                 OSL_ENSURE( MeasureUnit::INCH == nTargetUnit,
                             "output unit not supported for 1/100mm values" );
+                //fall-through
             case MeasureUnit::MM:
                 // 0.01mm = 1 mm/100 (exactly)
                 nMul = 10;