Remove "EOF-newline" lexer hack

In preparation for an upcoming change
Makes for nicer error messages, complaining about EOF instead of newlines
The hack had to be kept for the lexer raw mode to avoid a bug;
see the relevant code comment for more info.

src/link/patch.c

@@ -421,6 +421,10 @@ static int32_t computeRPNExpr(struct Patch const *patch,
 					isError = true;
 				} else {
 					value = patch->pcOffset + patch->pcSection->org;
+					// If the patch is an operand, PC is not at the patch's
+					// location, but at the (opcode) byte right before it
+					if (patch->isOperand)
+						value--;
 				}
 			} else {
 				symbol = getSymbol(fileSymbols, value);