fix detection of flag_after_symtable in compare_output: has to be lower-cased after the change made to lower() the lines before comparing
diff --git a/tests/run_tests.py b/tests/run_tests.py
index b0b24a0..a89d163 100755
--- a/tests/run_tests.py
+++ b/tests/run_tests.py
@@ -97,7 +97,7 @@
     flag_after_symtable = False
 
     for i in range(len(lines1)):
-        if 'Symbol table' in lines1[i]:
+        if 'symbol table' in lines1[i]:
             flag_after_symtable = True
 
         # Compare ignoring whitespace