re-read internal buffer after moving file's contents

macho-go/pkg/ios/macho/edit.go

@@ -774,6 +774,16 @@ func (mc *MachoContext) RemoveStrings() {
   copy(dummy, []byte("We R BShield\n"))
   mc.file.WriteAt(dummy, int64(string_segment.Fileoff()))
 
+  // TODO: erase old strings
+
+  // re-read internal buffer
+  last, _ := mc.file.Seek(0, io.SeekEnd)
+  mc.buf = make([]byte, last)
+  mc.file.Seek(0, io.SeekStart)
+	if _, err := io.ReadFull(mc.file, mc.buf); err != nil {
+    // panic?
+	}
+
   // loop over __TEXT,__text and find all occurances of (adrp, add)
   // edit the offset to points to new region
   // because adrp sets the register to the address page at its address