Commit 
9db0d8536dbc ("gdb/mi: fix breakpoint script field output") fixed
the output of the script key in the MI breakpoint output, from
  script={"print 10","continue"}
to
  script=["print 10","continue"]
However, it missed updating this test case, which still tests for the
old (broken) form, causing:
    FAIL: gdb.mi/mi-break.exp: mi-mode=main: test_breakpoint_commands: breakpoint commands: check that commands are set (unexpected output)
    FAIL: gdb.mi/mi-break.exp: mi-mode=separate: test_breakpoint_commands: breakpoint commands: check that commands are set (unexpected output)
Update the test to expect the new form.
Change-Id: I174919d4eea53e96d914ca9bd1cf6f01c8de30b8
 
     # seen.
     set bp_script [mi_make_breakpoint -number 7 -disp keep -func callee2 \
                       -file ".*basics.c" -line $line_callee2_body \
-                      -script {\{"print 10","continue"\}}]
+                      -script {\["print 10","continue"\]}]
     mi_gdb_test "-break-info 7" \
        "\\^done,[mi_make_breakpoint_table [list $bp_script]]" \
        "breakpoint commands: check that commands are set"