Simplify, remove gratuitous 'return;' at end of functions + cleanup

- Add empty lines for readability, after return before new statement and
  after variable declarations
- Remove explicit typecasting, NULL is NULL regardless of type
- Remove unnecessary braces and else

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/ksym.c

@@ -776,7 +776,6 @@ char *ExpandKadds(char *line, char *el)
 void SetParanoiaLevel(int level)
 {
 	i_am_paranoid = level;
-	return;
 }
 
 /*
@@ -821,8 +820,6 @@ void Syslog(int priority, char *fmt, ...)
 	vfprintf(stdout, fmt, ap);
 	va_end(ap);
 	fputc('\n', stdout);
-
-	return;
 }
 #endif