Compiler warnings.

src/aig/gia/giaIf.c

@@ -1495,7 +1495,7 @@ Gia_Man_t * Gia_ManFromIfLogic( If_Man_t * pIfMan )
     Vec_Int_t * vPiVars = NULL, * vPoVars = NULL;
     sat_solver * pSat = NULL;
     Ifn_Ntk_t * pNtkCell = NULL;
-    int i, k, nLutMax, Entry;
+    int i, k, nLutMax = -1, Entry;
     assert( !pIfMan->pPars->fDeriveLuts || pIfMan->pPars->fTruth );
 //    if ( pIfMan->pPars->fEnableCheck07 )
 //        pIfMan->pPars->fDeriveLuts = 0;

src/misc/extra/extraUtilThresh.c

@@ -282,7 +282,7 @@ int Extra_ThreshSelectWeights( word * t, int nVars, int * pW )
 }
 int Extra_ThreshCheck( word * t, int nVars, int * pW )
 {
-    int Chow[16], Chow0, nMints = (1 << nVars);
+    int Chow0, Chow[16];
     if ( !Abc_TtIsUnate(t, nVars) )
         return 0;
     Abc_TtMakePosUnate( t, nVars );