Fix the following gcc5 warning:
CC src/shared/libsystemd_shared_la-unit-name.lo
src/shared/unit-name.c: In function 'unit_name_is_valid':
src/shared/unit-name.c:102:34: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
if (!template_ok == TEMPLATE_VALID && at+1 == e)
^
if (at == n)
return false;
- if (!template_ok == TEMPLATE_VALID && at+1 == e)
+ if (template_ok != TEMPLATE_VALID && at+1 == e)
return false;
}