shithub: aacenc

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fix a crash

--- a/libfaac/blockswitch.c

+++ b/libfaac/blockswitch.c

@@ -102,7 +102,7 @@

               volchg += fabs(eng[sfb] - lasteng[sfb]);

           }

-          if ((volchg / toteng * quality) > 3.0)

+          if (toteng != 0.0 && (volchg / toteng * quality) > 3.0)

           {

               psyInfo->block_type = ONLY_SHORT_WINDOW;

               break;