[pull] master from ruby:master #632
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Fixes the following compiler warnings:
random.c: In function `random_init`:
random.c:416:38: warning: `rng` may be used uninitialized in this function [-Wmaybe-uninitialized]
416 | unsigned int major = rng->version.major;
| ~~~~~~~~~~~~^~~~~~
random.c: In function `random_bytes`:
random.c:1284:8: warning: `rng` may be used uninitialized in this function [-Wmaybe-uninitialized]
1284 | rng->get_bytes(rnd, ptr, n);
| ~~~^~~~~~~~~~~
random.c:1299:34: note: `rng` was declared here
1299 | const rb_random_interface_t *rng;
| ^~~
random.c: In function `rand_random_number`:
random.c:1606:12: warning: `rng` may be used uninitialized in this function [-Wmaybe-uninitialized]
1606 | return rand_range(obj, rng, rnd, vmax);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
random.c:1624:34: note: `rng` was declared here
1624 | const rb_random_interface_t *rng;
| ^~~
random.c: In function `random_rand`:
random.c:1120:15: warning: `rng` may be used uninitialized in this function [-Wmaybe-uninitialized]
1120 | return rng->get_int32(rnd);
| ~~~^~~~~~~~~~~
random.c:1573:34: note: `rng` was declared here
1573 | const rb_random_interface_t *rng;
| ^~~
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