find crash on stl container

            : #053 000014EC EIP: 00000000 ESP: 00000000
      crash : #054 00002A7C EIP: 099EAA8B ESP: 0DACE9D8
              099EAA60:00002B [099EAA8B] _Lbound@?$_Tree@V?$_Tset_traits@HU?$less@H@std (my.dll)
              099EAA30:000017 [099EAA47] lower_bound@?$_Tree@V?$_Tset_traits@HU?$less@H@std (my.dll)
              099EA980:000019 [099EA999] find@?$_Tree@V?$_Tset_traits@HU?$less@H@std (my.dll)
              099EA930:000035 [099EA965] Has@?$SyncSet@H@CompanyInternal (my.dll)
              09A07D80:00008E [09A07E0E] WaitExecutionReportReceive@STPMessageSender@CompanyInternal (my.dll)
              09A076E0:000505 [09A07BE5] SendMessageA@STPMessageSender@CompanyInternal (my.dll)
              099E92D0:00003D [099E930D] ThreadFunc@Thread@CompanyInternal (my.dll)
              769833B8:000012 [769833CA] AcquireSRWLockExclusive (kernel32.dll)
              77E59E6F:000063 [77E59ED2] RtlInsertElementGenericTableAvl (ntdll.dll)
              77E59E6F:000036 [77E59EA5] RtlInsertElementGenericTableAvl (ntdll.dll)

              099EAA60 55                push       ebp
              099EAA61 8BEC              mov        ebp, esp
              099EAA63 83EC0C            sub        esp, 0xc
              099EAA66 894DF4            mov        [ebp-0xc], ecx
              099EAA69 8B4DF4            mov        ecx, [ebp-0xc]
              099EAA6C E88F3CFFFF        call       0x99de700  ; _Root@?$_Tree@V?$_Tset_traits@VSessionID@FIX (my.dll)
              099EAA71 8B00              mov        eax, [eax]
              099EAA73 8945F8            mov        [ebp-0x8], eax
              099EAA76 8B4DF4            mov        ecx, [ebp-0xc]
              099EAA79 8B5104            mov        edx, [ecx+0x4]
              099EAA7C 8955FC            mov        [ebp-0x4], edx
              099EAA7F 8B45F8            mov        eax, [ebp-0x8]
              099EAA82 50                push       eax
              099EAA83 E868000000        call       0x99eaaf0  ; _Isnil@?$_Tree_val@V?$_Tset_traits@HU?$less@H@std (my.dll)
              099EAA88 83C404            add        esp, 0x4
   crash -->  099EAA8B 0FBE08            movsx      ecx, byte [eax]
              099EAA8E 85C9              test       ecx, ecx
              099EAA90 754C              jnz        0x99eaade

              099EAA92 8B5508            mov        edx, [ebp+0x8]
              099EAA95 52                push       edx
              099EAA96 8B45F8            mov        eax, [ebp-0x8]
              099EAA99 50                push       eax