Include <cctype> to use std::isdigit

Reviewed-by: ck

src/plugins/qt4projectmanager/qt-maemo/maemodeviceconfigurations.cpp

@@ -42,6 +42,7 @@
 #include <QtGui/QDesktopServices>
 
 #include <algorithm>
+#include <cctype>
 
 typedef Core::SshConnectionParameters::AuthType AuthType;