src/core/ngx_sha1.c:210: error: Uninitialized Value
  The value read from words[_] was never initialized.

src/core/ngx_sha1.c:210:9: 
208.         STEP(F1, a, b, c, d, e, words[15], 0x5a827999);
209.         STEP(F1, a, b, c, d, e, words[16], 0x5a827999);
210.         STEP(F1, a, b, c, d, e, words[17], 0x5a827999);
             ^
211.         STEP(F1, a, b, c, d, e, words[18], 0x5a827999);
212.         STEP(F1, a, b, c, d, e, words[19], 0x5a827999);
