refix failing unittest

src/flow.c

@@ -599,13 +599,15 @@ static int FlowPrune(FlowQueue *q, struct timeval *ts, int try_cnt)
             continue;
         }
 
-#ifndef UNITTESTS
+#ifdef UNITTESTS
+        if (run_mode != RUNMODE_UNITTEST) {
             if (FlowForceReassemblyForFlowV2(f) == 1) {
                 Flow *prev_f = f;
                 f = f->lnext;
                 SCMutexUnlock(&prev_f->m);
                 continue;
             }
+        }
 #endif
 
         /* this should not be possible */