[commit/obvious] Fix PR 21352: Command tsave does not support -r argument

[Sergio Durigan Junior <sergiodj@redhat.com>]

This is an obvious fix for PR 21352.  The problem is that the argument
parsing loop is not using an "else if" where it should, and therefore
the '-r' option ends up unrecognized by GDB.

gdb/ChangeLog:
2017-04-05  Sergio Durigan Junior  <sergiodj@redhat.com>

	PR gdb/21352
	* tracefile.c (tsave_command): Fix argument parsing for '-r'
	option.
---
 gdb/ChangeLog   | 6 ++++++
 gdb/tracefile.c | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index c3999b6..4141beb 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2017-04-05  Sergio Durigan Junior  <sergiodj@redhat.com>
+
+	PR gdb/21352
+	* tracefile.c (tsave_command): Fix argument parsing for '-r'
+	option.
+
 2017-04-05  Yao Qi  <yao.qi@linaro.org>
 
 	* frame.c (frame_unwind_register_unsigned): Call
diff --git a/gdb/tracefile.c b/gdb/tracefile.c
index 641ad4d..cc90945 100644
--- a/gdb/tracefile.c
+++ b/gdb/tracefile.c
@@ -325,7 +325,7 @@ tsave_command (char *args, int from_tty)
     {
       if (strcmp (*argv, "-r") == 0)
 	target_does_save = 1;
-      if (strcmp (*argv, "-ctf") == 0)
+      else if (strcmp (*argv, "-ctf") == 0)
 	generate_ctf = 1;
       else if (**argv == '-')
 	error (_("unknown option `%s'"), *argv);
-- 
2.9.3