added an error message when no replicant can be found

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23240 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/input/AddOnManager.cpp

@@ -524,6 +524,10 @@ AddOnManager::LoadReplicant()
 			}
 		}
 	}
+
+	if (!gInputServer->MethodReplicant()) {
+		fprintf(stderr, "LoadReplicant(): Method replicant not found!\n");
+	}
 }