Fixed an issue with animated icons on fancylineedit

Using a static local here is obviously simply wrong.
This should take care of the remaining issues with broken
animation states.

Reviewed-by: danimo

src/libs/utils/fancylineedit.cpp

@@ -126,10 +126,9 @@ FancyLineEdit::FancyLineEdit(QWidget *parent) :
 void FancyLineEdit::checkButton(const QString &text)
 {
     if (autoHideIcon()) {
-        static QString oldtext;
-        if (oldtext.isEmpty() || text.isEmpty())
+        if (m_oldText.isEmpty() || text.isEmpty())
             m_d->m_iconbutton->animateShow(!text.isEmpty());
-        oldtext = text;
+        m_oldText = text;
     }
 }
 

src/libs/utils/fancylineedit.h

@@ -114,6 +114,7 @@ private:
     bool isSideStored() const;
 
     FancyLineEditPrivate *m_d;
+    QString m_oldText;
 };
 
 } // namespace Utils