fix logic compiler warnings; @ext-rogers_c: please check

src/Classic/AbsBeamline/MultipoleTFunctions/Polynomial.h

@@ -118,7 +118,7 @@ private:
 
 inline
     int Polynomial::getCoefficient(const std::size_t &order) const {
-        if (order > maxXorder_m || order < 0) {
+        if (order > maxXorder_m) {
             return 0;
     }
         return coefficients_m[order];

tests/classic_src/AbsBeamline/VariableRFCavityFringeFieldTest.cpp

@@ -171,7 +171,7 @@ void partial(VariableRFCavityFringeField& cav, Vector_t pos, double t, double de
     if (var == 3) {
         tMinus -= delta;
         tPlus += delta;
-    } else if (var >= 0 or var < 3) {
+    } else if (var >= 0 && var < 3) {
         posMinus[var] -= delta;
         posPlus[var] += delta;
     }