[[ Bug ]] Do not define HAVE_GETPWNAM for android mysql client builds

This patch comments out the definition of `HAVE_GETPWNAM` for android mysql client
builds as the block where it is used calls `endpwent` which is unavailable.

Author: montegoulding

libmysql/src/config-android.h

@@ -75,7 +75,7 @@
 #define HAVE_GETPAGESIZE 1
 #define HAVE_GETPASS 1
 /* #undef HAVE_GETPASSPHRASE */
-#define HAVE_GETPWNAM 1
+//#define HAVE_GETPWNAM 1
 #define HAVE_GETPWUID 1
 #define HAVE_GETRLIMIT 1
 #define HAVE_GETRUSAGE 1