fix($compile): empty normalized href should pass sanitation check

Sometimes IE returns an empty string for its normalized href on a tags.
This should pass the sanitation check in $compile.

Closes #2219, #2593

1 files changed, 1 insertions, 1 deletions

diff --git a/src/ng/compile.js b/src/ng/compile.js
index e1dfda6f..b33e830a 100644
--- a/src/ng/compile.js
+++ b/src/ng/compile.js
@@ -298,7 +298,7 @@ function $CompileProvider($provide) {
 
           // href property always returns normalized absolute url, so we can match against that
           normalizedVal = urlSanitizationNode.href;
-          if (!normalizedVal.match(urlSanitizationWhitelist)) {
+          if (normalizedVal !== '' && !normalizedVal.match(urlSanitizationWhitelist)) {
             this[key] = value = 'unsafe:' + normalizedVal;
           }
         }