BGE: Fix softbody cluster collision: set mass before creating cluster.

Previously the mass of the soft body was set after creating the cluster,
causing incorrect mass in the clusters and incorrect behavior in collision.

source/gameengine/Physics/Bullet/CcdPhysicsController.cpp

@@ -462,12 +462,12 @@ bool CcdPhysicsController::CreateSoftbody()
 	}
 
 	psb->randomizeConstraints();
+	psb->setTotalMass(m_cci.m_mass);
 
 	if (m_cci.m_soft_collisionflags & (CCD_BSB_COL_CL_RS + CCD_BSB_COL_CL_SS)) {
 		psb->generateClusters(m_cci.m_soft_numclusteriterations);
 	}
 
-	psb->setTotalMass(m_cci.m_mass);
 
 	psb->setCollisionFlags(0);