db schema: updated column sizes of rls_watchers table

- size for callid and contact columns set to &uri_len;
- patch by Peter Dunkley

lib/srdb1/schema/rls_watchers.xml

@@ -97,7 +97,7 @@
     <column id="callid">
         <name>callid</name>
         <type>string</type>
-        <size>&domain_len;</size>
+        <size>&uri_len;</size>
         <description>Call ID</description>
     </column>
 
@@ -118,7 +118,7 @@
     <column>
         <name>contact</name>
         <type>string</type>
-        <size>&domain_len;</size>
+        <size>&uri_len;</size>
         <description>Contact</description>
     </column>