Don't use a constant value for SIZE_T_MAX.

Author: gonzalolarralde

src/shims/linux_stubs.h

@@ -72,7 +72,7 @@ typedef void (*dispatch_mach_msg_destructor_t)(void*);
 
 // SIZE_T_MAX should not be hardcoded like this here.
 #ifndef SIZE_T_MAX
-#define SIZE_T_MAX (0x7fffffff)
+#define SIZE_T_MAX (~(size_t)0)
 #endif
 
 // Define to 0 the NOTE_ values that are not present on Linux.