EnumConstantDeclaration.resolveConstructorBinding() may return null

[mickaelistria]

Seen randomly

java.lang.NullPointerException: Cannot invoke "org.eclipse.jdt.core.dom.IMethodBinding.getParameterTypes()" because "resolveConstructorBinding" is null
	at org.eclipse.jdt.internal.ui.javaeditor.EnumConstructorTargetFinder.findEnumDeclaration(EnumConstructorTargetFinder.java:148)
	at org.eclipse.jdt.internal.ui.javaeditor.EnumConstructorTargetFinder.findEnumConstructor(EnumConstructorTargetFinder.java:102)
	at org.eclipse.jdt.internal.ui.javaeditor.EnumConstructorTargetFinder.getOccurrence(EnumConstructorTargetFinder.java:76)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaElementHyperlinkDetector.findEnumConstructorTarget(JavaElementHyperlinkDetector.java:322)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaElementHyperlinkDetector.findEnumConstructorTarget(JavaElementHyperlinkDetector.java:305)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaElementHyperlinkDetector.detectHyperlinksCached(JavaElementHyperlinkDetector.java:118)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaElementHyperlinkDetector.lambda$0(JavaElementHyperlinkDetector.java:84)
	at org.eclipse.jdt.internal.core.JavaModelManager.cacheZipFiles(JavaModelManager.java:5694)

@robstryker this issue can cause issue some match related failures as it's being used in PatternLocatorVisitor.