[opengrok] fix NPE in AnalyzerGuru.getContentType, as find may return null

[lda...@fonix.com]

Author: Leo Davis <ldavis at fonix.com>
Repository: /hg/opengrok/trunk
Latest revision: 17bd8cf5906ba7786001c289cfa4d16eaf721b40
Total changesets: 1
Log message:
fix NPE in AnalyzerGuru.getContentType, as find may return null

src/org/opensolaris/opengrok/analysis/AnalyzerGuru.java
(getContentType) : changed as described.

Files:
        update: src/org/opensolaris/opengrok/analysis/AnalyzerGuru.java