gcc header fix

--- ParaView-3.98.0-src/VTK/ThirdParty/xdmf2/vtkxdmf2/libsrc/XdmfObject.h
+++ ParaView-3.98.0-src/VTK/ThirdParty/xdmf2/vtkxdmf2/libsrc/XdmfObject.h
@@ -82,6 +82,7 @@
 # ifdef UNIX
 #  include "sys/file.h"
 #  include "strings.h"
+#  include <cstring>
 #  define STRCASECMP strcasecmp
 #  define STRNCASECMP strncasecmp
 #  define STRCMP strcmp