[benchmark/ddm_wave] Generate Flags are initialized to 0

Hello, A small fix for benchmark/ddm_wave : Generate Flags were not initialized to 0. It was hence impossible to define two Resolution using Domain Decomposition Method.

benchmarks/ddm_waves/Schwarz.pro

@@ -18,6 +18,8 @@ Resolution {
       EndFor
     }
     Operation {
+      // Reset parameters
+      Call Init                 ;
       // output parameters
       Call PrintInfo;