typo in nginx-1.1.12/auto/lib/pcre/conf

[Alexandr Gomoliako]

diff --git a/auto/lib/pcre/conf b/auto/lib/pcre/conf
index e90d023..fd98ee9 100644
--- a/auto/lib/pcre/conf
+++ b/auto/lib/pcre/conf
@@ -165,7 +165,7 @@ else
             PCRE=YES
         fi

-        if [ $PCRE == YES ]; then
+        if [ $PCRE = YES ]; then
             ngx_feature="PCRE JIT support"
             ngx_feature_name="NGX_HAVE_PCRE_JIT"
             ngx_feature_test="int jit = 0;