fix toggle-truncate off bug

[driftcrow]

fix can't toggle-truncate-line off bug

[bmag]

The old toggle works fine for me as it is. Is it broken for you?

[driftcrow]

yes, always toggle on

[syl20bnr]

@driftcrow what is your version of Emacs ?

[driftcrow]

my emacs on windows version is follow,but my emacs on OSX is installed follow your document.all are the same result.

System Info

• OS: windows-nt
• Emacs: 25.0.50.1
• Spacemacs: 0.105.0
• Spacemacs branch: develop (rev. df1cabe)
• Distribution: spacemacs
• Layers:

(auto-completion better-defaults autohotkey emacs-lisp python clojure html javascript restclient markdown org my-org latex
                 (shell :variables shell-default-height 30 shell-default-position 'bottom)
                 osx version-control git github search-engine
                 (colors :variables colors-enable-nyan-cat-progress-bar t)
                 (chinese :variables chinese-default-input-method 'wubi chinese-enable-youdao-dict t)
                 my-misc)

[driftcrow]

it works fine ,but always display "tuncate-lines enabled." in mini-buffer echo area, even toggled off .

[StreakyCobra]

This change doesn't make it work, it does the opposite, i.e. always displays truncate-lines disabled.

[TheBB]

Seems to work fine here, so I merged it in.

Thank you! Cherry-picked in develop. You can safely delete your branch.