Bug 3955: Fixes leading space error in search.

Leading spaces in a search term were causing an error to be thrown in a join operator when auto-truncations is turned on. This patch removes the leading spaces.

C4/Search.pm

@@ -932,6 +932,8 @@ sub buildQuery {
                 }
 
                 if ($auto_truncation){
+                   # join throws an error if there is a leading space
+                   $operand =~ s/^\s+//;
 		   $operand=~join(" ",map{ "$_*" }split (/\s+/,$operand));
                 }