Fixes bug #74906 - redirecting incorrect include <sys/errno.h>

[petk]

Hello, when compiling PHP on Alpine Linux, there appears a warning:

In file included from /build/main/php7.2/src/php-7.2.0alpha3/ext/snmp/snmp.c:51:0:
/usr/include/sys/errno.h:1:2: warning: #warning redirecting incorrect #include <sys/errno.h> to <errno.h> [-Wcpp]
 #warning redirecting incorrect #include <sys/errno.h> to <errno.h>
  ^~~~~~~
/build/main/php7.2/src/php-7.2.0alpha3/ext/snmp/snmp.c: In function 'zm_startup_snmp':
/build/main/php7.2/src/php-7.2.0alpha3/ext/snmp/snmp.c:2328:34: warning: assignment from incompatible pointer type [-Wincompatible-pointer-types]
  php_snmp_object_handlers.get_gc = php_snmp_get_gc;

This patch fixes bug 74906 where more info is provided.

[krakjoe]

This merges cleanly in 7.0 and 7.1, but master there is a conflict, please would you have a look at that as I'm not confident about resolving it myself ?

[petk]

Yes, probably because there is a commit made in master branch on that file after the PHP-7.0 and PHP-7.1 branches.

Should I open a separate pull request for the master branch?

[petk]

Master branch had multiple changes in that file since, so I've made above separate pull request for master branch only instead...

[krakjoe]

Merged 4d08b9d

Thanks.