Fix crash issue

Fix crash issue

(gdb)bt
0  0xe76c1972 in _e_input_panel_surface_show (ips=0xa9a960) at /usr/src/debug/e-mod-tizen-wl-textinput-0.5.27/src/e_mod_input_panel.c:274
1  0xf5bbf924 in ffi_call_SYSV () at /usr/src/debug/libffi-3.1/armv7l-tizen-linux-gnueabi/../src/arm/sysv.S:188
2  0xf5bc00e6 in ffi_call (cif=cif@entry=0xffcb4b78, fn=<optimized out>, rvalue=rvalue@entry=0x0, avalue=avalue@entry=0xffcb4c00) at /usr/src/debug/libffi-3.1/armv7l-tizen-linux-gnueabi/../src/arm/ffi.c:339
3  0xf680e988 in wl_closure_invoke (flags=2, data=<optimized out>, opcode=<optimized out>, target=<optimized out>, closure=0xbaf3b8) at /usr/src/debug/wayland-1.18.0/src/connection.c:1123
4  wl_client_connection_data (fd=<optimized out>, mask=<optimized out>, data=0xac1188) at /usr/src/debug/wayland-1.18.0/src/wayland-server.c:481
5  0xf680c2de in wl_event_loop_dispatch (loop=0x62dda0, timeout=timeout@entry=0) at /usr/src/debug/wayland-1.18.0/src/event-loop.c:1027

Change-Id: Id01a00e2f71f4fd543f197a9ad28faeaa79200e4
Signed-off-by: Jihoon Kim <jihoon48.kim@samsung.com>