cgrulesengd: Fix improper indentation warning

cgrulesengd: Fix improper indentation warning

This commit fixes the following warning:

cgrulesengd.c: In function ‘cgre_parse_syslog_facility’:
cgrulesengd.c:1015:5: warning: this ‘if’ clause does not guard...
    [-Wmisleading-indentation]
    1015 |     if (strlen(arg) > 1)
         |     ^~
cgrulesengd.c:1018:2: note: ...this statement, but the latter is
    misleadingly indented as if it were guarded by the ‘if’
    1018 |  switch (arg[0]) {
         |  ^~~~~~

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>