Fixes a problem in how aggressively getSummariesFromOffsets tries to look up pages corresponding to links, a=chris

diff --git a/lib/url_parser.php b/lib/url_parser.php
index c22b9281a..a0236ac7c 100755
--- a/lib/url_parser.php
+++ b/lib/url_parser.php
@@ -620,6 +620,7 @@ class UrlParser
      */
     static function canonicalLink($link, $site, $no_fragment = true)
     {
+        $link = trim($link);
         if(!self::isSchemeHttpOrHttps($link)) {return NULL;}
         if(isset($link[0]) &&
             $link[0] == "/" && isset($link[1]) && $link[1] == "/") {
diff --git a/models/phrase_model.php b/models/phrase_model.php
index be089e6a8..58c76978e 100755
--- a/models/phrase_model.php
+++ b/models/phrase_model.php
@@ -1380,16 +1380,16 @@ class PhraseModel extends ParallelModel
         $lookups = array();
         foreach($summaries as $hash_url => $summary) {
             $lookup_url = false;
-            if(isset($summaries[$hash_url][self::LOCATION])) {
+            if(isset($summaries[$hash_url][self::LOCATION]) &&
+                $summaries[$hash_url][self::LOCATION] != array()) {
                 $tmp_url = explode(" => ",
                     $summaries[$hash_url][self::DESCRIPTION]);
                 if(isset($tmp_url[1])) {
                     $lookup_url = trim($tmp_url[1]);
                 }
-            } else if (isset($summaries[$hash_url][self::HASH])){
+            } else if(isset($summaries[$hash_url][self::HASH])){
                 $hash_parts = explode('|', $summaries[$hash_url][self::HASH]);
-                if(isset($hash_parts[3]) && strncmp($hash_parts[3],
-                    "location%3A", 11) == 0) {
+                if(isset($hash_parts[3]) ) {
                     $lookup_url = $hash_parts[1];
                 }
             }