https://bugs.gentoo.org/734724
"FreeImage now uses LibRaw 0.20-Beta2 (GIT patch 2020-05-29)
git-svn-id: https://svn.code.sf.net/p/freeimage/svn@1842 f6e0daa0-2725-47c6-9c0b-5e6e9cdd0720"
--- a/Source/FreeImage/PluginRAW.cpp
+++ b/Source/FreeImage/PluginRAW.cpp
@@ -59,21 +59,18 @@ public:
 	}
 
     int valid() { 
-		return (_io && _handle);
+		return (_io && _handle) ? 1 : 0;
 	}
 
     int read(void *buffer, size_t size, size_t count) { 
-		if(substream) return substream->read(buffer, size, count);
 		return _io->read_proc(buffer, (unsigned)size, (unsigned)count, _handle);
 	}
 
     int seek(INT64 offset, int origin) { 
-        if(substream) return substream->seek(offset, origin);
 		return _io->seek_proc(_handle, (long)offset, origin);
 	}
 
     INT64 tell() { 
-		if(substream) return substream->tell();
         return _io->tell_proc(_handle);
     }
 	
@@ -83,19 +80,21 @@ public:
 
     int get_char() { 
 		int c = 0;
-		if(substream) return substream->get_char();
-		if(!_io->read_proc(&c, 1, 1, _handle)) return -1;
+		if (!_io->read_proc(&c, 1, 1, _handle)) {
+			return -1;
+		}
 		return c;
    }
 	
 	char* gets(char *buffer, int length) { 
-		if (substream) return substream->gets(buffer, length);
 		memset(buffer, 0, length);
 		for(int i = 0; i < length; i++) {
-			if(!_io->read_proc(&buffer[i], 1, 1, _handle))
+			if (!_io->read_proc(&buffer[i], 1, 1, _handle)) {
 				return NULL;
-			if(buffer[i] == 0x0A)
+			}
+			if (buffer[i] == 0x0A) {
 				break;
+			}
 		}
 		return buffer;
 	}
@@ -104,7 +103,6 @@ public:
 		std::string buffer;
 		char element = 0;
 		bool bDone = false;
-		if(substream) return substream->scanf_one(fmt,val);				
 		do {
 			if(_io->read_proc(&element, 1, 1, _handle) == 1) {
 				switch(element) {
@@ -127,7 +125,6 @@ public:
 	}
 
 	int eof() { 
-		if(substream) return substream->eof();
         return (_io->tell_proc(_handle) >= _eof);
     }