Minor fix

AlexeyAB

2018-06-13 6d44529cf93211c319813c90e0c1adb34426abe5

 src/layer.c

@@ -11,6 +11,7 @@
#endif
      return;
   }
   if (l.mask)               free(l.mask);
   if (l.cweights)           free(l.cweights);
   if (l.indexes)            free(l.indexes);
   if (l.input_layers)       free(l.input_layers);