Fix GDB MultiThread test app on Windows hosts

The Windows implementation of JoinThread() does not accept a null
ThreadRet* parameter.

Author: jld01

dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.cdt.tests.dsf.gdb;singleton:=true
-Bundle-Version: 2.3.100.qualifier
+Bundle-Version: 2.3.200.qualifier
 Bundle-Activator: org.eclipse.cdt.tests.dsf.gdb.launching.TestsPlugin
 Bundle-Vendor: %providerName
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.34.0,4.0.0)",

dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/data/launch/src/MultiThread.cc

@@ -46,6 +46,7 @@ static ThreadRet THREAD_CALL_CONV PrintHello(void *void_arg)
 int main(int argc, char *argv[])
 {
 	ThreadHandle threads[NUM_THREADS];
+	ThreadRet thread_ret;
 	struct PrintHelloArgs args[NUM_THREADS];
 	const char *thread_names[NUM_THREADS] = {"monday", "tuesday", "wednesday", "thursday", "friday"};
 
@@ -99,7 +100,7 @@ int main(int argc, char *argv[])
 	for (int t = 0; t < NUM_THREADS; t++)
 	{
 		printf("In main, joining thread #%d\n", t);
-		JoinThread(threads[t], NULL);
+		JoinThread(threads[t], &thread_ret);
 	}
 
 	ThreadBarrierDestroy(&barrier_start);

dsf-gdb/org.eclipse.cdt.tests.dsf.gdb/pom.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-   Copyright (c) 2012, 2021 Contributors to the Eclipse Foundation
+   Copyright (c) 2012, 2026 Contributors to the Eclipse Foundation
 
    This program and the accompanying materials
    are made available under the terms of the Eclipse Public License 2.0
@@ -21,7 +21,7 @@
 		<relativePath>../../pom.xml</relativePath>
 	</parent>
 
-	<version>2.3.100-SNAPSHOT</version>
+	<version>2.3.200-SNAPSHOT</version>
 	<artifactId>org.eclipse.cdt.tests.dsf.gdb</artifactId>
 	<packaging>eclipse-test-plugin</packaging>