src/core/ngx_sha1.c:198: error: Uninitialized Value
  The value read from words[_] was never initialized.

src/core/ngx_sha1.c:198:9: 
196.         STEP(F1, a, b, c, d, e, words[3],  0x5a827999);
197.         STEP(F1, a, b, c, d, e, words[4],  0x5a827999);
198.         STEP(F1, a, b, c, d, e, words[5],  0x5a827999);
             ^
199.         STEP(F1, a, b, c, d, e, words[6],  0x5a827999);
200.         STEP(F1, a, b, c, d, e, words[7],  0x5a827999);
