Remove an improperly placed semicolon in order to solve the following
compiler error:
.../main.c:144:3: error: this 'if' clause does not guard... [-Werror=misleading-indentation]
if (execl("/bin/busybox", "/bin/busybox", "md5sum", file, NULL));
^~
.../main.c:145:4: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
return NULL;
^~~~~~
cc1: all warnings being treated as errors
Fixes#4723.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>