dynappsrc: Don't leak template in setup_source
dynappsrc: Don't leak template in setup_source

Change-Id: I77788a0ae886540f350bb3cae13d47c752fd8de6
Reviewed-on: https://gpro.palm.com/30481
Tested-by: Jeongseok Kim <0c03ab7a1b32f29697716389c3f9549845834271@lge.com>
Reviewed-by: Jeongseok Kim <0c03ab7a1b32f29697716389c3f9549845834271@lge.com>

justinjoy/gst-plugins-lp,justinjoy/gst-plugins-lp