No bug - Prevent index interuption

Change-Id: I7a0aebc43e0df0facbeb6ab335f8887df83660a3
diff --git a/core/plugins/org.eclipse.dltk.core.index.lucene/src/org/eclipse/dltk/internal/core/index/lucene/IndexContainer.java b/core/plugins/org.eclipse.dltk.core.index.lucene/src/org/eclipse/dltk/internal/core/index/lucene/IndexContainer.java
index f0f1839..721d31a 100644
--- a/core/plugins/org.eclipse.dltk.core.index.lucene/src/org/eclipse/dltk/internal/core/index/lucene/IndexContainer.java
+++ b/core/plugins/org.eclipse.dltk.core.index.lucene/src/org/eclipse/dltk/internal/core/index/lucene/IndexContainer.java
@@ -195,12 +195,15 @@
 					dataType.getDirectory(), String.valueOf(elementType));
 			writer = getWriter(writerPath);
 			fIndexWriters.get(dataType).put(elementType, writer);
+			fIndexSearchers.get(dataType).put(elementType, null);
 		}
 		return writer;
 	}
 
 	public synchronized SearcherManager getIndexSearcher(IndexType dataType,
 			int elementType) {
+
+		getIndexWriter(dataType, elementType);
 		SearcherManager searcher = fIndexSearchers.get(dataType)
 				.get(elementType);
 		try {
@@ -210,6 +213,7 @@
 						new SearcherFactory());
 				fIndexSearchers.get(dataType).put(elementType, searcher);
 			}
+
 			// Try to achieve the up-to-date index state
 			searcher.maybeRefresh();
 		} catch (IOException e) {