Fix problem with uninitialized variables used in THcHodoscope::Clear
THcHodoscope::Clear is called at beginning of analysis before ReadDatabase and Init methods
and therefore  MAXHODHITS and fNPlanes are uninitiated.
Change Clear to ClearEvent
Add call to ClearEvent in Decode
Eliminate Clear method in THcHodoscope.h
Add "+1" to length when using new char[]
Found when doing valgrind --tool=memcheck --track-origins=yes --leak-check=full hcana
Return errors like below
==14467== Invalid write of size 1
==14467==    at 0x4A0794F: __GI_strcpy (mc_replace_strmem.c:313)
==14467==    by 0x57137A3: THcHodoscope::Setup(char const*, char const*) (THcHodoscope.cxx:112)
==14467==    by 0x5713A7E: THcHodoscope::Init(TDatime const&) (THcHodoscope.cxx:142)
==14467==    by 0x4D38C29: THaApparatus::Init(TDatime const&) (THaApparatus.C:193)
==14467==    by 0x4D67E57: THaAnalyzer::InitModules(TList const*, TDatime&, int, char const*) (THaAnalyzer.C:433)
==14467==    by 0x4D68B1F: THaAnalyzer::DoInit(THaRunBase*) (THaAnalyzer.C:667)
==14467==    by 0x4D68126: THaAnalyzer::Init(THaRunBase*) (THaAnalyzer.C:467)
==14467==    by 0x4D6B31A: THaAnalyzer::Process(THaRunBase*) (THaAnalyzer.C:1289)
==14467==    by 0x4E21E97: G__haDict_704_0_6(G__value*, char const*, G__param*, int) (haDict.C:23491)
==14467==    by 0x6DB6148: Cint::G__ExceptionWrapper(int (*)(G__value*, char const*, G__param*, int), G__value*, char*, G__param*, int) (in /u/apps/root/5.34.13/root/lib/libCint.so.5.34)
==14467==    by 0x6E5A3A0: G__execute_call (in /u/apps/root/5.34.13/root/lib/libCint.so.5.34)
==14467==    by 0x6E5B201: G__call_cppfunc (in /u/apps/root/5.34.13/root/lib/libCint.so.5.34)
==14467==  Address 0xd7636a2 is 0 bytes after a block of size 2 alloc'd
==14467==    at 0x4A0674C: operator new[](unsigned long) (vg_replace_malloc.c:305)
==14467==    by 0x5713757: THcHodoscope::Setup(char const*, char const*) (THcHodoscope.cxx:111)
==14467==    by 0x5713A7E: THcHodoscope::Init(TDatime const&) (THcHodoscope.cxx:142)
==14467==    by 0x4D38C29: THaApparatus::Init(TDatime const&) (THaApparatus.C:193)
==14467==    by 0x4D67E57: THaAnalyzer::InitModules(TList const*, TDatime&, int, char const*) (THaAnalyzer.C:433)
==14467==    by 0x4D68B1F: THaAnalyzer::DoInit(THaRunBase*) (THaAnalyzer.C:667)
==14467==    by 0x4D68126: THaAnalyzer::Init(THaRunBase*) (THaAnalyzer.C:467)
==14467==    by 0x4D6B31A: THaAnalyzer::Process(THaRunBase*) (THaAnalyzer.C:1289)
==14467==    by 0x4E21E97: G__haDict_704_0_6(G__value*, char const*, G__param*, int) (haDict.C:23491)
==14467==    by 0x6DB6148: Cint::G__ExceptionWrapper(int (*)(G__value*, char const*, G__param*, int), G__value*, char*, G__param*, int) (in /u/apps/root/5