make a bound checking more compatible with Windows 64

On Linux 32:   sizeof(long)=32 == sizeof(void *)=32
    on Linux 64:   sizeof(long)=64 == sizeof(void *)=64
    on Windows 64: sizeof(long)=32 != sizeof(void *)=64

tccelf.c

@@ -1568,7 +1568,7 @@ static int tcc_add_support(TCCState *s1, const char *filename)
 ST_FUNC void tcc_add_bcheck(TCCState *s1)
 {
 #ifdef CONFIG_TCC_BCHECK
-    unsigned long *ptr;
+    addr_t *ptr;
     Section *init_section;
     unsigned char *pinit;
     int sym_index;