Fix bug in migration

scripts/migrations

@@ -50,7 +50,7 @@ fi
 
 if [ "$version" == 1 ]; then
     cfg_write $configfile version 2
-    if [ -d "./build/cotire" ]; then
-        rm -r ./build/cotire
+    if [ -d "./build/CMakeFiles/cathook.dir" ]; then
+        rm -r ./build/CMakeFiles/cathook.dir
     fi
 fi

scripts/updater

@@ -25,7 +25,11 @@ echo $$ > ${LOCKFILE}
 . ./scripts/config.shlib
 
 # Run migrations 
-update_channel="$(cfg_read $configfile update_channel)"
+exists=true
+cfg_haskey $configfile update_channel || exists=false
+if [ "$exists" == true ]; then
+    update_channel="$(cfg_read $configfile update_channel)"
+fi
 if [ "$update_channel" != "developer" ]; then
     ./scripts/migrations "$@" || exit 0
 fi