Fix crash in mappings stats. Closes #503

1 files changed, 3 insertions, 1 deletions

diff --git a/enigma-swing/src/main/java/cuchaz/enigma/gui/stats/StatsGenerator.java b/enigma-swing/src/main/java/cuchaz/enigma/gui/stats/StatsGenerator.java
index 5d241665..915f1c61 100644
--- a/enigma-swing/src/main/java/cuchaz/enigma/gui/stats/StatsGenerator.java
+++ b/enigma-swing/src/main/java/cuchaz/enigma/gui/stats/StatsGenerator.java
@@ -102,7 +102,9 @@ public class StatsGenerator {
                         for (ClassEntry clazz : entryIndex.getClasses()) {
                                 progress.step(numDone++, I18n.translate("type.classes"));
 
-                                if (this.mapper.deobfuscate(clazz).getPackageName().startsWith(topLevelPackageSlash)) {
+                                final String packageName = this.mapper.deobfuscate(clazz).getPackageName();
+
+                                if (packageName != null && packageName.startsWith(topLevelPackageSlash)) {
                                         update(counts, clazz);
                                         totalMappable++;
                                 }