src/core/ngx_sha1.c:254: error: Uninitialized Value
  The value read from words[_] was never initialized.

src/core/ngx_sha1.c:254:9: 
252.         STEP(F3, a, b, c, d, e, words[57], 0x8f1bbcdc);
253.         STEP(F3, a, b, c, d, e, words[58], 0x8f1bbcdc);
254.         STEP(F3, a, b, c, d, e, words[59], 0x8f1bbcdc);
             ^
255. 
256.         STEP(F2, a, b, c, d, e, words[60], 0xca62c1d6);
