fix: remove duplicate part from the gzip patch (#18)

Author: spacewander

patch/1.19.3/nginx-gzip.patch

@@ -1,5 +1,5 @@
 diff --git src/http/modules/ngx_http_gzip_filter_module.c src/http/modules/ngx_http_gzip_filter_module.c
-index c75169c..35b8433 100644
+index c75169c..723b040 100644
 --- src/http/modules/ngx_http_gzip_filter_module.c
 +++ src/http/modules/ngx_http_gzip_filter_module.c
 @@ -8,6 +8,9 @@
@@ -66,7 +66,7 @@ index c75169c..35b8433 100644
              wbits = ngx_max(wbits, 13);
          }
 
-@@ -615,6 +650,21 @@ ngx_http_gzip_filter_deflate_start(ngx_http_request_t *r,
+@@ -615,8 +650,20 @@ ngx_http_gzip_filter_deflate_start(ngx_http_request_t *r,
      ctx->zstream.zfree = ngx_http_gzip_filter_free;
      ctx->zstream.opaque = ctx;
 
@@ -81,14 +81,13 @@ index c75169c..35b8433 100644
 +    rc = deflateInit2(&ctx->zstream, (int) level, Z_DEFLATED,
 +                      ctx->wbits + 16, ctx->memlevel, Z_DEFAULT_STRATEGY);
 +#else
-+    rc = deflateInit2(&ctx->zstream, (int) conf->level, Z_DEFLATED,
-+                      ctx->wbits + 16, ctx->memlevel, Z_DEFAULT_STRATEGY);
-+#endif
-+
      rc = deflateInit2(&ctx->zstream, (int) conf->level, Z_DEFLATED,
                        ctx->wbits + 16, ctx->memlevel, Z_DEFAULT_STRATEGY);
++#endif
 
-@@ -705,6 +755,16 @@ ngx_http_gzip_filter_get_buf(ngx_http_request_t *r, ngx_http_gzip_ctx_t *ctx)
+     if (rc != Z_OK) {
+         ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
+@@ -705,6 +752,16 @@ ngx_http_gzip_filter_get_buf(ngx_http_request_t *r, ngx_http_gzip_ctx_t *ctx)
 
      conf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_filter_module);
 
@@ -105,7 +104,7 @@ index c75169c..35b8433 100644
      if (ctx->free) {
 
          cl = ctx->free;
-@@ -713,9 +773,15 @@ ngx_http_gzip_filter_get_buf(ngx_http_request_t *r, ngx_http_gzip_ctx_t *ctx)
+@@ -713,9 +770,15 @@ ngx_http_gzip_filter_get_buf(ngx_http_request_t *r, ngx_http_gzip_ctx_t *ctx)
 
          ngx_free_chain(r->pool, cl);