evil: fix uninitialize warning

Summary:
@Fix

Signed-off-by: Vivek Ellur <vivek.ellur@samsung.com>

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D3324

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>

src/bin/evil/evil_test_pipe.c

@@ -45,7 +45,7 @@ test_pipe_test(void)
    int            sockets[2];
    struct timeval t;
    fd_set         rfds;
-   int            ret;
+   int            ret = 0;
    data          *d;
    DWORD          thread_id;
    HANDLE         h;