src/core/ngx_sha1.c:238: error: Uninitialized Value
  The value read from words[_] was never initialized.

src/core/ngx_sha1.c:238:9: 
236.         STEP(F3, a, b, c, d, e, words[41], 0x8f1bbcdc);
237.         STEP(F3, a, b, c, d, e, words[42], 0x8f1bbcdc);
238.         STEP(F3, a, b, c, d, e, words[43], 0x8f1bbcdc);
             ^
239.         STEP(F3, a, b, c, d, e, words[44], 0x8f1bbcdc);
240.         STEP(F3, a, b, c, d, e, words[45], 0x8f1bbcdc);
