update-mocks: fix stubs generation for fatal().

We're going to need this, and the PRINTF_FMT(1,2) in front of it caused
mockup.sh to miss the declaration.

We also eliminate the obviously-unused fallback case (which referred
to daemon/*.h).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

tools/mockup.sh

@@ -15,17 +15,12 @@ if [ $# -eq 0 ]; then
 fi
 
 for SYMBOL; do
-    WHERE=$(grep -nH "^[a-z0-9_ ]* [*]*$SYMBOL(" */*.h )
+    WHERE=$(grep -nH "^[a-zA-Z0-9_ (),]* [*]*$SYMBOL(" */*.h )
     if [ x"$WHERE" != x ]; then
 	STUB='\n{ fprintf(stderr, "'$SYMBOL' called!\\n"); abort(); }'
     else
-	WHERE=$(grep -nH "^extern \(const \)\?struct [a-zA-Z0-9_]* $SYMBOL;$" daemon/*.h)
-	if [ x"$WHERE" != x ]; then
-	    STUB=';'
-	else
-	    echo "/* Could not find declaration for $SYMBOL */"
-	    continue
-	fi
+	echo "/* Could not find declaration for $SYMBOL */"
+	continue
     fi
 	
     echo "/* Generated stub for $SYMBOL */"
@@ -35,5 +30,5 @@ for SYMBOL; do
     END=$(tail -n +$LINE < $FILE | grep -n ';$');
     NUM=${END%%:*}
 
-    tail -n +$LINE < $FILE | head -n $NUM | sed 's/^extern *//' | sed 's/PRINTF_FMT([^)]*)//' | sed 's/,/ UNNEEDED,/g' | sed 's/\([a-z0-9A-Z*_]* [a-z0-9A-Z*_]*\));/\1 UNNEEDED);/' | sed "s/;\$/$STUB/" | sed 's/\s*$//'
+    tail -n +$LINE < $FILE | head -n $NUM | sed 's/^extern *//' | sed 's/PRINTF_FMT([^)]*)//' | sed 's/NORETURN//g' | sed 's/,/ UNNEEDED,/g' | sed 's/\([a-z0-9A-Z*_]* [a-z0-9A-Z*_]*\));/\1 UNNEEDED);/' | sed "s/;\$/$STUB/" | sed 's/\s*$//'
 done