Move struct ma_lcg to a more appropriate location.

miniaudio.h

@@ -1871,6 +1871,11 @@ typedef struct
     void  (* onFree)(void* p, void* pUserData);
 } ma_allocation_callbacks;
 
+typedef struct
+{
+    ma_int32 state;
+} ma_lcg;
+
 
 /**************************************************************************************************************************************************************
 
@@ -5441,11 +5446,6 @@ MA_API ma_result ma_waveform_set_sample_rate(ma_waveform* pWaveform, ma_uint32 s
 
 
 
-typedef struct
-{
-    ma_int32 state;
-} ma_lcg;
-
 typedef enum
 {
     ma_noise_type_white,