Werk #3236: Fixed host page of pnp4nagios

Component	User interface
Title	Fixed host page of pnp4nagios
Date	Mar 17, 2016
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.8b7 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Fixed PHP error when opening host page of pnp4nagios, the error was:

"cannot redeclare replace_cmk_expression()..."

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