really tiny style fix

emulate.c

@@ -39,9 +39,9 @@ int validCond(int32_t cond, struct ProcessorState *processor)
   switch (cond)
   {
   case 0:
-    return z != 0;
+    return z;
   case 1:
-    return z == 0;
+    return !z;
   case 10:
     return n == z;
   case 11:
@@ -74,4 +74,4 @@ int32_t barrelShift(int immediate, int32_t operand, int *carry, struct Processor
 }
 */
 
-// TODO: applyOperation(int opcode, int32_t operator1, int32_t operator2, int *carry)
\ No newline at end of file
+// TODO: applyOperation(int opcode, int32_t operator1, int32_t operator2, int *carry)