Use bitwise '&' instead of logical '&&'

Make two instances of the same change. Change bitwise AND (&) to logical
AND (&&).

Currently the code uses a bitwise AND between two boolean values.

In the first instance;

The first operand is a flag that has been bitwise combined with a bit
mask to get a boolean value as to whether a file has group write
permissions set.

The second operand used is a struct member that is intended as a
boolean flag not a bit mask.

In the second instance the argument is the same except with world write
permissions instead of group write (S_IWOTH, S_IWGRP).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Chris Dunlop <chris@onthe.net.au>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Closes openzfs#6684 
Closes openzfs#6722

Author: tcharding

cmd/zed/zed_conf.c

@@ -394,13 +394,13 @@ zed_conf_scan_dir(struct zed_conf *zcp)
 			    direntp->d_name);
 			continue;
 		}
-		if ((st.st_mode & S_IWGRP) & !zcp->do_force) {
+		if ((st.st_mode & S_IWGRP) && !zcp->do_force) {
 			zed_log_msg(LOG_NOTICE,
 			    "Ignoring \"%s\": writable by group",
 			    direntp->d_name);
 			continue;
 		}
-		if ((st.st_mode & S_IWOTH) & !zcp->do_force) {
+		if ((st.st_mode & S_IWOTH) && !zcp->do_force) {
 			zed_log_msg(LOG_NOTICE,
 			    "Ignoring \"%s\": writable by other",
 			    direntp->d_name);