- Only check error stack when no exception was caused   In case an exception is thrown errors may have been emitted by    internal PHP functions, and their return value will usually be   checked. PHP errors may contain useful information, so we will   not remove them from the error stack in our wrapping implementations
- Only check error stack when no exception was caused
  In case an exception is thrown errors may have been emitted by 
  internal PHP functions, and their return value will usually be
  checked. PHP errors may contain useful information, so we will
  not remove them from the error stack in our wrapping implementations

git-svn-id: 526f3b90ad6d9b1dfe840af828070ca3d99521ac@11414 d2cacbed-c0f6-0310-851a-9dad52fc623a

johannes85/core