Check number of bytes remaining before reading texture strings

addons/io_scene_swbf_msh/chunked_file_reader.py

@@ -138,6 +138,9 @@ class Reader:
     def how_much_left(self, pos):
         return self.end_pos - pos
 
+    def bytes_remaining(self):
+        return self.end_pos - self.file.tell()
+
     def skip_until(self, header):
         while (self.could_have_child() and header not in self.peak_next_header()):
             self.skip_bytes(1)

addons/io_scene_swbf_msh/msh_scene_read.py

@@ -165,18 +165,22 @@ def _read_matd(matd: Reader) -> Material:
 
         elif next_header == "TX0D":
             with matd.read_child() as tx0d:
+                if tx0d.bytes_remaining() > 0:
                     mat.texture0 = tx0d.read_string()
 
         elif next_header == "TX1D":
             with matd.read_child() as tx1d:
+                if tx1d.bytes_remaining() > 0:
                     mat.texture1 = tx1d.read_string()
 
         elif next_header == "TX2D":
             with matd.read_child() as tx2d:
+                if tx2d.bytes_remaining() > 0:
                     mat.texture2 = tx2d.read_string()
 
         elif next_header == "TX3D":
             with matd.read_child() as tx3d:
+                if tx3d.bytes_remaining() > 0:
                     mat.texture3 = tx3d.read_string()
 
         else: