FIX: unreferenced local variables

Author: Oldes

src/core/p-serial.c

@@ -43,7 +43,6 @@
 	REBREQ *req;	// IO request
 	REBVAL *spec;	// port spec
 	REBVAL *arg;	// action argument value
-	REBVAL *val;	// e.g. port number value
 	REBINT result;	// IO result
 	REBCNT refs;	// refinement argument flags
 	REBCNT len;		// generic length

src/core/s-mold.c

@@ -1046,8 +1046,6 @@ STOID Mold_Error(REBVAL *value, REB_MOLD *mold, REBFLG molded)
 {
 	ERROR_OBJ *err;
 	REBVAL *msg;  // Error message block
-	REBCNT sym;
-	REBVAL word;
 
 	// Protect against recursion. !!!!
 

src/core/u-compress.c

@@ -423,11 +423,8 @@ static BrotliDecoderState *BrotliDecoder = NULL;
 **
 ***********************************************************************/
 {
-	REBU64 size;
 	REBU64 out_len;
 	REBSER *output;
-	REBINT err;
-	REBYTE *dest;
 	REBYTE *src = BIN_HEAD(input) + index;
 	BrotliDecoderResult res;