clang warning in circuitbuild.c switch statement

In maint-0.2.4, building with clang 3.2 on fedora, I get:

src/or/circuitbuild.c:1946:11: error: enumeration values 'PATH_STATE_NEW_CIRC',
      'PATH_STATE_BUILD_ATTEMPTED', and 'PATH_STATE_ALREADY_COUNTED' not
      explicitly handled in switch [-Werror,-Wswitch-enum]
  switch (ocirc->path_state) {

I have a fix for this; just adding this ticket so I can give it a bug number.