report 0x0xADDR as invalid

[Jamiras]

There are currently 21 achievement sets with rich presence containing memory reads in the form 0x0xADDR.

This currently "works" because the leading 0x is discarded

rcheevos/src/rcheevos/memref.c

Lines 79 to 83 in 6fba22f

	if (aux[0] == '0') {
	if (aux[1] != 'x' && aux[1] != 'X')
	return RC_INVALID_MEMORY_OPERAND;
	aux += 2;

Then it does a hex parse of the remaining string

rcheevos/src/rcheevos/memref.c

Line 141 in 6fba22f

value = strtoul(aux, &end, 16);

which detects and ignores the second 0x.

While this doesn't generate an error in the existing runtime, it does cause issues with some external parsers, and should be reported as an error. This PR causes it to be reported as an error.

The rich presence scripts for the following games should be updated to prevent the error from being reported after this code is published.

> select ID from GameData where RichPresencePatch like '%0x0x%';
+-------+
| ID    |
+-------+
|  1234 |
|  1572 |
|  2689 |
|  2739 |
|  2831 |
|  3217 |
|  5323 |
|  5376 |
|  6762 |
|  9088 |
|  9966 |
| 10173 |
| 10481 |
| 13049 |
| 13431 |
| 14117 |
| 16276 |
| 20812 |
| 26986 |
| 28593 |
| 28618 |
+-------+

There are no occurrences of the pattern in existing achievement or leaderboard definitions.

Also now reporting an error when RP conditionals don't full parse: https://discord.com/channels/310192285306454017/1314383114960633918/1314760614803017778