CLEANUP: cli: rename dynamic error printing state

Rename CLI_ST_PRINT_FREE to CLI_ST_PRINT_DYNERR.

Most notably, this highlights that this is reserved to error printing.

This is done to ensure consistency between CLI_ST_PRINT/CLI_ST_PRINT_DYN
and CLI_ST_PRINT_ERR/CLI_ST_PRINT_DYNERR. The name is also consistent
with the function cli_dynerr() which activates it.
diff --git a/addons/ot/src/cli.c b/addons/ot/src/cli.c
index 9132fe9..0080dbd 100644
--- a/addons/ot/src/cli.c
+++ b/addons/ot/src/cli.c
@@ -97,7 +97,7 @@
 		(void)memprintf(&msg, FLT_OT_CLI_CMD " : current debug level is %hhu", value);
 	}
 
-	cmn_cli_set_msg(appctx, err, msg, CLI_ST_PRINT_FREE);
+	cmn_cli_set_msg(appctx, err, msg, CLI_ST_PRINT_DYNERR);
 
 	FLT_OT_RETURN_INT(retval);
 }
@@ -137,7 +137,7 @@
 		(void)memprintf(&msg, "%s%s" FLT_OT_CLI_CMD " : filter %sabled", FLT_OT_CLI_MSG_CAT(msg), value ? "dis" : "en");
 	} FLT_OT_PROXIES_LIST_END();
 
-	cmn_cli_set_msg(appctx, NULL, msg, CLI_ST_PRINT_FREE);
+	cmn_cli_set_msg(appctx, NULL, msg, CLI_ST_PRINT_DYNERR);
 
 	FLT_OT_RETURN_INT(retval);
 }
@@ -175,7 +175,7 @@
 		(void)memprintf(&msg, "%s%s" FLT_OT_CLI_CMD " : filter set %s-errors", FLT_OT_CLI_MSG_CAT(msg), value ? "hard" : "soft");
 	} FLT_OT_PROXIES_LIST_END();
 
-	cmn_cli_set_msg(appctx, NULL, msg, CLI_ST_PRINT_FREE);
+	cmn_cli_set_msg(appctx, NULL, msg, CLI_ST_PRINT_DYNERR);
 
 	FLT_OT_RETURN_INT(retval);
 }
@@ -238,7 +238,7 @@
 		} FLT_OT_PROXIES_LIST_END();
 	}
 
-	cmn_cli_set_msg(appctx, err, msg, CLI_ST_PRINT_FREE);
+	cmn_cli_set_msg(appctx, err, msg, CLI_ST_PRINT_DYNERR);
 
 	FLT_OT_RETURN_INT(retval);
 }
@@ -289,7 +289,7 @@
 		} FLT_OT_PROXIES_LIST_END();
 	}
 
-	cmn_cli_set_msg(appctx, err, msg, CLI_ST_PRINT_FREE);
+	cmn_cli_set_msg(appctx, err, msg, CLI_ST_PRINT_DYNERR);
 
 	FLT_OT_RETURN_INT(retval);
 }
@@ -343,7 +343,7 @@
 		nl = "\n";
 	} FLT_OT_PROXIES_LIST_END();
 
-	cmn_cli_set_msg(appctx, NULL, msg, CLI_ST_PRINT_FREE);
+	cmn_cli_set_msg(appctx, NULL, msg, CLI_ST_PRINT_DYNERR);
 
 	FLT_OT_RETURN_INT(retval);
 }