simple npe in tests fixed

diff --git a/jps/jps-builders/src/org/jetbrains/jps/incremental/messages/CompilerMessage.java b/jps/jps-builders/src/org/jetbrains/jps/incremental/messages/CompilerMessage.java
index df872b1db4c9deceeaa61d73120ade2dbe29188e..c627ab7df75a09c9fc4f318465a2e954d91e3a7b 100644 (file)
--- a/jps/jps-builders/src/org/jetbrains/jps/incremental/messages/CompilerMessage.java
+++ b/jps/jps-builders/src/org/jetbrains/jps/incremental/messages/CompilerMessage.java
@@ -54,7 +54,7 @@ public class CompilerMessage extends BuildMessage {
   }
 
   public CompilerMessage(@NotNull String compilerName, Kind kind, String messageText, String sourcePath) {
-    this(compilerName, messageText, Collections.singleton(sourcePath), kind);
+    this(compilerName, messageText, sourcePath == null ? Collections.<String>emptyList() : Collections.singleton(sourcePath), kind);
   }
 
   public CompilerMessage(@NotNull String compilerName, Kind kind, String messageText,