[education/rkward/kf5] rkward/rbackend: fixup! Fix compilation error from windows

[Thomas Friedrichsmeier]

Git commit 54555680dc64c86a0c509f07a25c776b6be90c48 by Thomas Friedrichsmeier, on behalf of Carl Schwan.
Committed on 01/04/2024 at 11:45.
Pushed by tfry into branch 'kf5'.

fixup! Fix compilation error from windows

M  +3    -3    rkward/rbackend/rkrbackend.cpp

https://invent.kde.org/education/rkward/-/commit/54555680dc64c86a0c509f07a25c776b6be90c48

diff --git a/rkward/rbackend/rkrbackend.cpp b/rkward/rbackend/rkrbackend.cpp
index c8d65a225..520400d1e 100644
--- a/rkward/rbackend/rkrbackend.cpp
+++ b/rkward/rbackend/rkrbackend.cpp
@@ -505,10 +505,10 @@ void RWriteConsoleEx (const char *buf, int buflen, int type) {
 		while (pos < buflen) {
 			int start = str.indexOf(winutf8start, pos);
 			if (start < 0) {
-				utf8.append (RKRBackend::toUtf8 (str.mid(pos)));
+				utf8.append (RKRBackend::toUtf8 (str.mid(pos)).constData());
 				break;
 			}
-			utf8.append (RKRBackend::toUtf8 (str.left(start)));
+			utf8.append (RKRBackend::toUtf8 (str.left(start)).constData());
 			start += winutf8start.length();
 			if (start >= buflen) break;
 			int end = str.indexOf(winutf8stop, start);
@@ -516,7 +516,7 @@ void RWriteConsoleEx (const char *buf, int buflen, int type) {
 				utf8.append(QString::fromUtf8(str.mid(start, end - start)));
 				pos = end + winutf8stop.length();
 			} else {
-				utf8.append(QString::fromUtf8(str.mid(start)));
+				utf8.append(QString::fromUtf8(str.mid(start)).constData());
 				break;
 			}
 		}