#11565: Fix several typos. Patch by Piotr Kasprzyk.
diff --git a/Modules/zlib/gzio.c b/Modules/zlib/gzio.c
index 7e90f49..5cf50e0 100644
--- a/Modules/zlib/gzio.c
+++ b/Modules/zlib/gzio.c
@@ -256,7 +256,7 @@
 /* ===========================================================================
      Read a byte from a gz_stream; update next_in and avail_in. Return EOF
    for end of file.
-   IN assertion: the stream s has been sucessfully opened for reading.
+   IN assertion: the stream s has been successfully opened for reading.
 */
 local int get_byte(s)
     gz_stream *s;
@@ -281,7 +281,7 @@
     mode to transparent if the gzip magic header is not present; set s->err
     to Z_DATA_ERROR if the magic header is present but the rest of the header
     is incorrect.
-    IN assertion: the stream s has already been created sucessfully;
+    IN assertion: the stream s has already been created successfully;
        s->stream.avail_in is zero for the first time, but may be non-zero
        for concatenated .gz files.
 */