fix compile issues

Author: Murmele

src/git/Config.cpp

@@ -102,7 +102,7 @@ QString Config::value<QString>(const QString &key,
     return defaultValue;
   }
 
-  git_buf buf = GIT_BUF_INIT_CONST(nullptr, 0);
+  git_buf buf = GIT_BUF_INIT;
   git_config_get_string_buf(&buf, d.data(), key.toUtf8());
   QString value = QString::fromUtf8(buf.ptr, buf.size);
   git_buf_dispose(&buf);

src/git/Diff.cpp

@@ -108,10 +108,10 @@ QByteArray Diff::print() {
   QByteArray diff;
   for (auto file : data.files) {
     for (auto hunk : file.hunks) {
-      diff.append(hunk.header);
+	  diff.append(hunk.header.toUtf8());
 
       for (auto line : hunk.lines)
-        diff.append(line);
+		diff.append(line.toUtf8());
     }
   }
   qDebug() << QString(diff);

src/git/Remote.cpp

@@ -644,7 +644,7 @@ void Remote::log(const QString &text) {
     return;
 
   QString time = QTime::currentTime().toString(Qt::ISODateWithMs);
-  QTextStream(&file) << time << " - " << text << endl;
+  QTextStream(&file) << time << " - " << text << Qt::endl;
 }
 
 } // namespace git