In libpq-fe.h: #if defined(sun) && defined(sparc) && !defined(__svr4)

	extern char *sys_errlist[]; #define strerror(A) (sys_errlist[(A)])
#endif                                                  /* sunos4
*/

is picked up by Solaris when the above is intended only for SunOS.

Fix Solaris.  Albert Chin-A-Young