size of shm needs to be only sometimes checked when opening shared memory (#443)

slsDetectorSoftware/tests/test-Module.cpp

@@ -33,7 +33,7 @@ TEST_CASE("Is shm fixed pattern shm compatible") {
     // Set shm version to 0
     sls::SharedMemory<sls::sharedModule> shm(0, 0);
     REQUIRE(shm.exists() == true);
-    shm.openSharedMemory();
+    shm.openSharedMemory(true);
     shm()->shmversion = 0;
 
     // Should fail since version is set to 0