Diff of /src/tools/align_image_stack.cpp [cb1ab4] .. [4402d7]  Maximize  Restore

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--- a/src/tools/align_image_stack.cpp
+++ b/src/tools/align_image_stack.cpp
@@ -1070,6 +1070,7 @@
         {
             hugin_utils::wrapupGPU();
         };
+        HuginBase::LensDB::LensDB::Clean();
         return 1;
     }
 
@@ -1077,5 +1078,6 @@
     {
         hugin_utils::wrapupGPU();
     };
+    HuginBase::LensDB::LensDB::Clean();
     return 0;
 }