angelozerr/eclipse-wtp-xml-search — pull request #26 by gamerson (2014-09-19 04:06:29+00:00)
Title: Protect against NPE

In my dev environment with the latest eclipse-wtp-search plugins I'm seeing this NPE often:
```
org.eclipse.core.runtime.AssertionFailedException: null argument:
at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:85)
at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:73)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.getEditorInputJavaElement(EditorUtility.java:442)
at org.eclipse.wst.xml.search.editor.java.hover.Java2XHover.getHoverInfo(Java2XHover.java:41)
at org.eclipse.jdt.internal.ui.text.java.hover.BestMatchHover.getHoverInfo2(BestMatchHover.java:169)
at org.eclipse.jdt.internal.ui.text.java.hover.BestMatchHover.getHoverInfo2(BestMatchHover.java:129)
at org.eclipse.jdt.internal.ui.text.java.hover.JavaEditorTextHoverProxy.getHoverInfo2(JavaEditorTextHoverProxy.java:85)
at org.eclipse.jface.text.TextViewerHoverManager$4.run(TextViewerHoverManager.java:166)
```

This commit adds a simple null check