Fix disasm.py, debug=False is an argument to toolhelper, not to exit

Change-Id: I4de424a864766d1be1944f37eb855f0e6bb8c7d4
diff --git a/tools/disasm.py b/tools/disasm.py
index a9a5a0a..368a78f 100755
--- a/tools/disasm.py
+++ b/tools/disasm.py
@@ -7,4 +7,4 @@
 import toolhelper
 
 if __name__ == '__main__':
-  sys.exit(toolhelper.run('disasm', sys.argv[1:]), debug=False)
+  sys.exit(toolhelper.run('disasm', sys.argv[1:], debug=False))