[root@ke3d:/home/toof]$ gdb wireshark
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This GDB was configured as "i386-pc-linux-gnu"...(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".

(gdb) run
Starting program: /usr/bin/wireshark
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---Type <return> to continue, or q <return> to quit---
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[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 31738)]
                                                            <---- this is where i was trying to click STOP to stop the packet capture but nothing So i just closed the program by clicking X.   
Program exited normally.
(gdb)