Testing: check if hostname is longer than zero

airscan-nohostname.patch

@@ -0,0 +1,23 @@
+diff --git a/airscan-http.c b/airscan-http.c
+index 1fdef6e..a32c50f 100644
+--- a/airscan-http.c
++++ b/airscan-http.c
+@@ -972,7 +972,7 @@ http_uri_strip_zone_suffux (http_uri *uri)
+ {
+     http_uri_field field;
+     const char     *suffix;
+-    size_t         len;
++    size_t         len = 0;
+     char           *host;
+ 
+     /* Check if we need to change something */
+@@ -987,6 +987,9 @@ http_uri_strip_zone_suffux (http_uri *uri)
+     }
+ 
+     len = suffix - field.str;
++    if (len == 0) {
++        return; /* No hostname */
++    }
+ 
+     /* Update host */
+     host = alloca(len + 1);

sane-airscan.spec

@@ -5,7 +5,7 @@
 
 Name:           sane-airscan
 Version:        0.99.21
-Release:        1%{?dist}
+Release:        1%{?dist}.testing
 Summary:        SANE backend for AirScan (eSCL) and WSD document scanners
 # the exception is defined in LICENSE, meant for SANE project in most cases
 License:        GPLv2+ with exceptions
@@ -13,6 +13,7 @@ URL:            https://github.com/alexpevzner/sane-airscan
 Source:         %{URL}/archive/%{version}/%{name}-%{version}.tar.gz
 
 # backported from upstream
+Patch001: airscan-nohostname.patch
 
 
 # needed for querying and getting mDNS messages from local network