Now MultiphasePressureFilterLBMKernel pressure update is also corrected (wrong...

Now MultiphasePressureFilterLBMKernel pressure update is also corrected (wrong fiel in previous commit).

src/cpu/VirtualFluidsCore/LBM/MultiphasePressureFilterLBMKernel.cpp

@@ -251,7 +251,7 @@ void MultiphasePressureFilterLBMKernel::calculate(int step)
 						+ (mfaab + mfacb + mfcab + mfccb) + (mfaba + mfabc + mfcba + mfcbc) + (mfbaa + mfbac + mfbca + mfbcc)
 						+ (mfabb + mfcbb) + (mfbab + mfbcb) + (mfbba + mfbbc) + mfbbb;
 
-					LBMReal rho = rhoH + rhoToPhi * ((*pressure)(x1, x2, x3) - phiH);
+					LBMReal rho = rhoH + rhoToPhi * ((*phaseField)(x1, x2, x3) - phiH);
 					//! variable density -> TRANSFER!
 					//LBMReal rho = rhoH * ((*phaseField)(x1, x2, x3)) + rhoL * ((*phaseField2)(x1, x2, x3));