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Residency profiling with eventlog enabled breaks

The RTS panics when a program compiled with -eventlog is run with +RTS -l -h,

trec-car-graph-expansion: internal error: getHeapProfBreakdown: unknown heap profiling mode       
Stack trace:                 0x2122e2f    set_initial_registers (rts/Libdw.c:288.0)      
            0x7f98bbdfb8b8    dwfl_thread_getframes (/usr/lib/x86_64-linux-gnu/libdw-0.168.so)
            0x7f98bbdfb347    (null) (/usr/lib/x86_64-linux-gnu/libdw-0.168.so)               
            0x7f98bbdfb673    dwfl_getthreads (/usr/lib/x86_64-linux-gnu/libdw-0.168.so)              
            0x7f98bbdfbc30    dwfl_getthread_frames (/usr/lib/x86_64-linux-gnu/libdw-0.168.so)                                                             
                 0x212342d    libdwGetBacktrace (rts/Libdw.c:259.0)                                                                            
                 0x2127aab    rtsFatalInternalErrorFn (rts/RtsMessages.c:169.0)                   
                 0x2127c6d    barf (rts/RtsMessages.c:47.0)                                            
                 0x2136824    postHeapProfBegin (rts/eventlog/EventLog.c:1147.0)                                                                                                                      0x21443bb    initHeapProfiling.part.5 (rts/ProfHeap.c:464.0)                  
                 0x211cc16    hs_init_ghc (rts/RtsStartup.c:268.0)                                       
                 0x2128bb3    hs_main (rts/RtsMain.c:63.0)                                            
                  0x4cfc8d    (null) (/home/ben/trec-car/mediawiki-annotate/dist-newstyle/build/x86_64-linux/ghc-8.2.1/trec-car-graph-expansion-0.1.0.0/c/trec-car-graph-expansion/bu
ild/trec-car-graph-expansion/trec-car-graph-expansion)                                            
            0x7f98bba4a2b1    __libc_start_main (../csu/libc-start.c:325.0)
                  0x40ba1a    _start (/home/ben/trec-car/mediawiki-annotate/dist-newstyle/build/x86_64-linux/ghc-8.2.1/trec-car-graph-expansion-0.1.0.0/c/trec-car-graph-expansion/bu
ild/trec-car-graph-expansion/trec-car-graph-expansion)                                             
                                                              
    (GHC version 8.2.1 for x86_64_unknown_linux)                                                      
    Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
Trac metadata
Trac field Value
Version 8.2.1
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
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Blocking
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