Purpose: Fixed HDFFV-8928
Description:
    Followed hints on the JIRA issue to remove several potential memory
    leaks.
Platforms tested:
    Linux/ppc64 (ostrich)
    Linux/32 2.6 (jam)
    SunOS 5.11 (emu)



git-svn-id: https://svn.hdfgroup.uiuc.edu/hdf5/trunk@25644 dab4d1a6-ed17-0410-a064-d1ae371a2980
Description:
    Removed the try/block with new/bad_alloc that were unintentionally
    committed previously.
Platforms tested:
    Linux/ppc64 (ostrich)
    Linux/32 2.6 (jam)
    SunOS 5.11 (emu)



git-svn-id: https://svn.hdfgroup.uiuc.edu/hdf5/trunk@25645 dab4d1a6-ed17-0410-a064-d1ae371a2980