src/core/ngx_sha1.c:247: error: Uninitialized Value
  The value read from words[_] was never initialized.

src/core/ngx_sha1.c:247:9: 
245.         STEP(F3, a, b, c, d, e, words[50], 0x8f1bbcdc);
246.         STEP(F3, a, b, c, d, e, words[51], 0x8f1bbcdc);
247.         STEP(F3, a, b, c, d, e, words[52], 0x8f1bbcdc);
             ^
248.         STEP(F3, a, b, c, d, e, words[53], 0x8f1bbcdc);
249.         STEP(F3, a, b, c, d, e, words[54], 0x8f1bbcdc);
