reoder check for slightly faster init of header

src/common/slurm_protocol_util.c

@@ -83,12 +83,12 @@ void init_header(header_t *header, slurm_msg_t *msg,
 	   || msg->msg_type == ACCOUNTING_FIRST_REG) {
 		uint32_t rpc_version =
 			((accounting_update_msg_t *)msg->data)->rpc_version;
-		if(rpc_version < 5)
-			header->version = SLURM_1_3_PROTOCOL_VERSION;
-		else if(rpc_version < 6)
-			header->version = SLURM_2_0_PROTOCOL_VERSION;
-		else if(rpc_version >= 6)
+		if(rpc_version >= 6)
 			header->version = SLURM_PROTOCOL_VERSION;
+		else if(rpc_version >= 5)
+			header->version = SLURM_2_0_PROTOCOL_VERSION;
+		else
+			header->version = SLURM_1_3_PROTOCOL_VERSION;
 	} else 
 		header->version = SLURM_PROTOCOL_VERSION;