Revision 446253

MFH: r446250

databases/mongodb: unbreak with clang >= 4.0

Convert ptr > 0 to ptr != 0. As semantics are similar no need for
PORTREVISION bump.

PR:		216213 220857
Submitted by:	tobik (based on)
Approved by:	maintainer timeout (4 months) + portmgr blanket
Obtained from:	upstream (still under APACHE-2.0)
Approved by:	ports-secteam blanket