[svn-r25644] 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)

c++/src/H5IdComponent.cpp

@@ -317,6 +317,7 @@ H5std_string IdComponent::p_get_file_name() const
    // Check for failure again
    if( name_size < 0 )
    {
+      delete []name_C;
       throw IdComponentException("", "H5Fget_name failed");
    }