Fix added to unlock AT handler mutex

adbridge · adbridge · commit 40028c8453dd · 2019-09-19T16:37:08.000+01:00
This is a manual commit to bring the contents of PR11526 across.
The original commit could not be cherry-picked or patched!
diff --git a/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT.cpp b/features/cellular/framework/targets/UBLOX/AT/UBLOX_AT.cpp
@@ -117,7 +117,7 @@ nsapi_error_t UBLOX_AT::init()
     }
 #endif
 
-    return err;
+    return _at->unlock_return_error();
 }
 
 nsapi_error_t UBLOX_AT::config_authentication_parameters()

Original file line number	Diff line number	Diff line change
`@@ -117,7 +117,7 @@ nsapi_error_t UBLOX_AT::init()`
`117`	`117`	`}`
`118`	`118`	`#endif`
`119`	`119`
`120`		`- return err;`
	`120`	`+ return _at->unlock_return_error();`
`121`	`121`	`}`
`122`	`122`
`123`	`123`	`nsapi_error_t UBLOX_AT::config_authentication_parameters()`