Make sure we always show the correct error count on the build errors tab.

PHPCI/Store/BuildErrorStore.php

@@ -54,4 +54,27 @@ class BuildErrorStore extends BuildErrorStoreBase
             return array();
         }
     }
+
+    /**
+     * Gets the total number of errors for a given build.
+     * @param $buildId
+     * @param string $since date string
+     * @return array
+     */
+    public function getErrorTotalForBuild($buildId)
+    {
+        $query = 'SELECT COUNT(*) AS total FROM build_error
+                    WHERE build_id = :build';
+
+        $stmt = Database::getConnection('read')->prepare($query);
+
+        $stmt->bindValue(':build', $buildId, \PDO::PARAM_INT);
+
+        if ($stmt->execute()) {
+            $res = $stmt->fetch(\PDO::FETCH_ASSOC);
+            return $res['total'];
+        } else {
+            return array();
+        }
+    }
 }