Logresolve style and nit fix-ups:

   * Remove some redundant whitespace in variable declarations. 
   * Add some whitespace for clarity around an if and a while statement. 
   * Remove redundant and unneccessary casts
   * Use APR_HASH_KEY_STRING



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@328048 13f79535-47bb-0310-9956-ffa450edef68