obexd: Fix obex pointer is not null judgment

Judge that the obex pointer is not null
before OBEX release

---
 gobex/gobex-transfer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index c94d018b2..626a08e38 100644
@@ -64,7 +64,8 @@ static void transfer_free(struct transfer *transfer)
 		g_obex_remove_request_function(transfer->obex,
 							transfer->abort_id);
 
-	g_obex_unref(transfer->obex);
+    if (transfer->obex)
+		g_obex_unref(transfer->obex);
 	g_free(transfer);
 }
 

2.20.1

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Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list. This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=654450

---Test result---

Test Summary:

CheckPatch                    FAIL      1.22 seconds
GitLint                       PASS      0.79 seconds
Prep - Setup ELL              PASS      42.64 seconds
Build - Prep                  PASS      0.59 seconds
Build - Configure             PASS      8.28 seconds
Build - Make                  PASS      1277.12 seconds
Make Check                    PASS      11.49 seconds
Make Check w/Valgrind         PASS      451.73 seconds
Make Distcheck                PASS      239.01 seconds
Build w/ext ELL - Configure   PASS      8.58 seconds
Build w/ext ELL - Make        PASS      1257.30 seconds
Incremental Build with patchesPASS      0.00 seconds

Details
##############################
Test: CheckPatch - FAIL
Desc: Run checkpatch.pl script with rule in .checkpatch.conf Output:
obexd: Fix obex pointer is not null judgment WARNING:LEADING_SPACE: please, no spaces at the start of a line #69: FILE: gobex/gobex-transfer.c:67:
+ if (transfer->obex)$

WARNING:SUSPECT_CODE_INDENT: suspect code indent for conditional statements (4, 16) #69: FILE: gobex/gobex-transfer.c:67:
+ if (transfer->obex)
+ g_obex_unref(transfer->obex);

/github/workspace/src/12897744.patch total: 0 errors, 2 warnings, 9 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or --fix-inplace.

/github/workspace/src/12897744.patch has style problems, please review.

NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO

NOTE: If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.

---
Regards,
Linux Bluetooth