unix/coverage: Cast values to fit %x formatting code.

This fixes the following diagnostic produced by the plugin:

    error: argument 3: Format ‘%x’ requires a ‘int’ or
        ‘unsigned int’ (32 bits), not ‘long unsigned int’ [size 64]
        [-Werror=format=]

Signed-off-by: Jeff Epler <[email protected]>

Author: jepler

ports/unix/coverage.c

@@ -528,21 +528,21 @@ static mp_obj_t extra_coverage(void) {
 
         // convert a large integer value (stored in a mpz) to mp_uint_t and to ll;
         mp_obj_t obj_bigint = mp_obj_new_int_from_uint((mp_uint_t)0xdeadbeef);
-        mp_printf(&mp_plat_print, "%x\n", mp_obj_get_uint(obj_bigint));
+        mp_printf(&mp_plat_print, "%x\n", (int)mp_obj_get_uint(obj_bigint));
         obj_bigint = mp_obj_new_int_from_ll(0xc0ffee777c0ffeell);
         long long value_ll = mp_obj_get_ll(obj_bigint);
         mp_printf(&mp_plat_print, "%x%08x\n", (uint32_t)(value_ll >> 32), (uint32_t)value_ll);
 
         // convert a large integer value (stored via a struct object) to uint and to ll
         // `deadbeef` global is an uctypes.struct defined by extra_coverage.py
         obj_bigint = mp_load_global(MP_QSTR_deadbeef);
-        mp_printf(&mp_plat_print, "%x\n", mp_obj_get_uint(obj_bigint));
+        mp_printf(&mp_plat_print, "%x\n", (int)mp_obj_get_uint(obj_bigint));
         value_ll = mp_obj_get_ll(obj_bigint);
         mp_printf(&mp_plat_print, "%x%08x\n", (uint32_t)(value_ll >> 32), (uint32_t)value_ll);
 
         // convert a smaller integer value to mp_uint_t and to ll
         obj_bigint = mp_obj_new_int_from_uint(0xc0ffee);
-        mp_printf(&mp_plat_print, "%x\n", mp_obj_get_uint(obj_bigint));
+        mp_printf(&mp_plat_print, "%x\n", (int)mp_obj_get_uint(obj_bigint));
         value_ll = mp_obj_get_ll(obj_bigint);
         mp_printf(&mp_plat_print, "%x%08x\n", (uint32_t)(value_ll >> 32), (uint32_t)value_ll);
     }