aaa_error.sh: fix: don't erase tmpfile if we don't exit

lib/aaa_errors.sh

@@ -72,10 +72,10 @@ trap "error ${LINENO}; backtrace; err_exit" ERR
 # Exit program in case of error unless keepgoing is set to true
 function err_exit
 {
-    if [[ -f $tmpfile ]]; then
-        rm -f $tmpfile
-    fi
     if [[ $KEEPGOING != true ]]; then
+        if [[ -f $tmpfile ]]; then
+            rm -f $tmpfile
+        fi
         exit 255
     fi
 }