sail_fix_duplicate_codecs.patch

diff --git a/src/sail-codecs/CMakeLists.txt b/src/sail-codecs/CMakeLists.txt
index ee06b9cd..75530943 100644
--- a/src/sail-codecs/CMakeLists.txt
+++ b/src/sail-codecs/CMakeLists.txt
@@ -7,27 +7,27 @@ list(SORT CODECS)
 # Filter out codecs
 #
 if (SAIL_ONLY_CODECS)
-    set(ENABLED_CODECS "")
+    set(ENABLED_CODECS_TEMP "")
 
     foreach (codec IN LISTS CODECS)
         if (${codec} IN_LIST SAIL_ONLY_CODECS)
-            list(APPEND ENABLED_CODECS ${codec})
+            list(APPEND ENABLED_CODECS_TEMP ${codec})
         endif()
     endforeach()
 
-    set(CODECS ${ENABLED_CODECS})
+    set(CODECS ${ENABLED_CODECS_TEMP})
 endif()
 
 if (SAIL_EXCEPT_CODECS)
-    set(ENABLED_CODECS "")
+    set(ENABLED_CODECS_TEMP "")
 
     foreach (codec IN LISTS CODECS)
         if (NOT ${codec} IN_LIST SAIL_EXCEPT_CODECS)
-            list(APPEND ENABLED_CODECS ${codec})
+            list(APPEND ENABLED_CODECS_TEMP ${codec})
         endif()
     endforeach()
 
-    set(CODECS ${ENABLED_CODECS})
+    set(CODECS ${ENABLED_CODECS_TEMP})
 endif()
 
 # Add enabled codecs (but codecs still can disable themselves later due to missing dependencies).