make tls callbacks an array instead of null

exception.go

@@ -193,14 +193,14 @@ type ImageRuntimeFunctionEntry struct {
 type ImageARMRuntimeFunctionEntry struct {
  // Function Start RVA is the 32-bit RVA of the start of the function. If
  // the function contains thumb code, the low bit of this address must be set.
- BeginAddress uint32 `bitfield:",functionstart"`
+ BeginAddress uint32 `bitfield:",functionstart" json:"begin_address"`
 
  // Flag is a 2-bit field that indicates how to interpret the remaining
  // 30 bits of the second .pdata word. If Flag is 0, then the remaining bits
  // form an Exception Information RVA (with the low two bits implicitly 0).
  // If Flag is non-zero, then the remaining bits form a Packed Unwind Data
  // structure.
- Flag uint8
+ Flag uint8 `json:"flag"`
 
  /* Exception Information RVA or Packed Unwind Data.
 
@@ -211,7 +211,7 @@ type ImageARMRuntimeFunctionEntry struct {
  Packed Unwind Data is a compressed description of the operations required
  to unwind from a function, assuming a canonical form. In this case, no
  .xdata record is required. */
- ExceptionFlag uint32
+ ExceptionFlag uint32 `json:"exception_flag"`
 }
 
 // UnwindCode is used to record the sequence of operations in the prolog that

tls.go

@@ -111,7 +111,7 @@ func (pe *File) parseTLSDirectory(rva, size uint32) error {
  tls.Struct = tlsDir
 
  if tlsDir.AddressOfCallBacks != 0 {
- var callbacks []uint64
+ callbacks := make([]uint64, 0)
  rvaAddressOfCallBacks := uint32(tlsDir.AddressOfCallBacks -
  pe.NtHeader.OptionalHeader.(ImageOptionalHeader64).ImageBase)
  offset := pe.GetOffsetFromRva(rvaAddressOfCallBacks)
@@ -138,7 +138,7 @@ func (pe *File) parseTLSDirectory(rva, size uint32) error {
  // 94a9dc17d47b03f6fb01cb639e25503b37761b452e7c07ec6b6c2280635f1df9
  // Callbacks may be empty.
  if tlsDir.AddressOfCallBacks != 0 {
- var callbacks []uint32
+ callbacks := make([]uint32, 0)
  rvaAddressOfCallBacks := tlsDir.AddressOfCallBacks -
  pe.NtHeader.OptionalHeader.(ImageOptionalHeader32).ImageBase
  offset := pe.GetOffsetFromRva(rvaAddressOfCallBacks)