Add function to retrieve modifiable lump data

Author: ceski-1

prboom2/src/w_memcache.c

@@ -88,3 +88,8 @@ const void *W_LockLumpNum(int lump)
 {
   return W_LumpByNum(lump);
 }
+
+void *W_GetModifiableLumpData(int lump)
+{
+  return lump_data[lump];
+}

prboom2/src/w_mmap.c

@@ -260,3 +260,8 @@ const void* W_LockLumpNum(int lump)
 
   return lump_data[lump];
 }
+
+void *W_GetModifiableLumpData(int lump)
+{
+  return lump_data[lump];
+}

prboom2/src/w_wad.h

@@ -164,6 +164,7 @@ char*   W_ReadLumpToString (int lump);
 const void* W_SafeLumpByNum (int lump);
 const void* W_LumpByNum (int lump);
 const void* W_LockLumpNum(int lump);
+void *W_GetModifiableLumpData(int lump);
 
 int W_LumpNumExists(int lump);
 int W_LumpNameExists(const char *name);