Made statement in if have equal whitespace on either side.

src/USER-MANIFOLD/fix_manifoldforce.cpp

@@ -53,7 +53,7 @@ FixManifoldForce::FixManifoldForce(LAMMPS *lmp, int narg, char **arg) :
   // Check the min-style:
   int good_minner = str_eq(update->minimize_style,"hftn") |
                     str_eq(update->minimize_style,"quickmin");
-  if( !good_minner){
+  if( !good_minner ){
     error->warning(FLERR,"Make sure min_style is set to hftn "
                    "or quickmin before minimizing");
   }