test/*: add more missing stdlib.h includes

test/test_archive.cxx

@@ -10,6 +10,7 @@
 #include <glib.h>
 
 #include <string.h>
+#include <stdlib.h>
 
 class ArchiveLookupTest : public CppUnit::TestFixture {
 	CPPUNIT_TEST_SUITE(ArchiveLookupTest);

test/test_byte_reverse.cxx

@@ -27,6 +27,7 @@
 #include <cppunit/ui/text/TestRunner.h>
 
 #include <string.h>
+#include <stdlib.h>
 
 class ByteReverseTest : public CppUnit::TestFixture {
 	CPPUNIT_TEST_SUITE(ByteReverseTest);

test/test_pcm_main.cxx

@@ -23,6 +23,8 @@
 #include <cppunit/extensions/TestFactoryRegistry.h>
 #include <cppunit/ui/text/TestRunner.h>
 
+#include <stdlib.h>
+
 int
 main(gcc_unused int argc, gcc_unused char **argv)
 {

test/test_util.cxx

@@ -11,6 +11,7 @@
 #include <cppunit/extensions/HelperMacros.h>
 
 #include <string.h>
+#include <stdlib.h>
 
 class UriUtilTest : public CppUnit::TestFixture {
 	CPPUNIT_TEST_SUITE(UriUtilTest);