fix compiler warning

src/include/86box/nv/classes/vid_nv3_classes.h

@@ -39,6 +39,15 @@
 
 extern const char* nv3_class_names[];
 
+/* Object Class 0x01 (real hardware)
+    Beta factor
+*/
+typedef struct nv_object_class_001
+{
+    uint8_t reserved[0xFF];         // Required for NV_CLASS Core Functionality
+    // Put the rest of it here
+} nv3_beta_factor_t;
+
 /* 
 Object Class 0x07 (real hardware)
              0x1E (drivers)

src/include/86box/nv/vid_nv3.h

@@ -6,7 +6,8 @@
  *
  *          This file is part of the 86Box distribution.
  *
- *          JENSEN HUANG APPROVED !!!!
+ *          vid_nv3.h: NV3 Architecture Hardware Reference (open-source)
+ *          Last updated     1 January 2025 (STILL WORKING ON IT)
  *
  *
  *
@@ -15,8 +16,7 @@
  *          Copyright 2024-2025 Connor Hyde
  */
 
-// vid_nv3.h: NV3 Architecture Hardware Reference (open-source)
-// Last updated     30 December 2024
+
 
 // The GPU base structure
 extern const device_config_t nv3_config[];

src/video/nv/nv3/nv3_core.c

@@ -679,7 +679,7 @@ void nv3_svga_out(uint16_t addr, uint8_t val, void* priv)
                 val = (nv3->nvbase.svga.crtc[NV3_CRTC_REGISTER_OVERFLOW] & ~0x10) | (val & 0x10);
 
             // set the register value...
-            uint8_t old_value = nv3->nvbase.svga.crtc[crtcreg];
+            old_value = nv3->nvbase.svga.crtc[crtcreg];
 
             nv3->nvbase.svga.crtc[crtcreg] = val;
             // ...now act on it