Catch exception if bookmark provider cursor allocation fails

- The cursor allocation was failing during low memory conditions.
  The exception was not getting caught resulting in browser crash.

CR-Fixed: SWE-5650

Change-Id: Id48c599a3f1d4d32a7720da8a75a61228a66c285
diff --git a/src/com/android/browser/provider/BrowserProvider2.java b/src/com/android/browser/provider/BrowserProvider2.java
index 58aa1a7..7875844 100644
--- a/src/com/android/browser/provider/BrowserProvider2.java
+++ b/src/com/android/browser/provider/BrowserProvider2.java
@@ -1857,6 +1857,8 @@
                     }
                 }
             }
+        } catch (Exception e) {
+            return false;
         } finally {
             cursor.close();
         }