fix misc. Mac build problems anyway

desktop/unx/source/args.c

@@ -29,7 +29,7 @@
  * in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable
  * instead of those above.
  */
-#include <malloc.h>
+#include <stdlib.h>
 #include <string.h>
 #include <osl/process.h>
 

desktop/unx/source/start.c

@@ -38,6 +38,7 @@
 #include <fcntl.h>
 #include <stdio.h>
 #include <libgen.h>
+#include <string.h>
 
 #include <osl/nlsupport.h>
 #include <osl/process.h>