Fix compilation error with 32-bit GCC builds.

miniaudio.h

@@ -10574,7 +10574,7 @@ static MA_INLINE unsigned int ma_disable_denormals()
     }
     #elif defined(MA_X86) || defined(MA_X64)
     {
-        #if !(defined(__TINYC__) || defined(__WATCOMC__))   /* <-- Add compilers that lack support for _mm_getcsr() and _mm_setcsr() to this list. */
+        #if defined(__SSE2__) && !(defined(__TINYC__) || defined(__WATCOMC__))   /* <-- Add compilers that lack support for _mm_getcsr() and _mm_setcsr() to this list. */
         {
             prevState = _mm_getcsr();
             _mm_setcsr(prevState | MA_MM_DENORMALS_ZERO_MASK | MA_MM_FLUSH_ZERO_MASK);
@@ -10614,7 +10614,7 @@ static MA_INLINE void ma_restore_denormals(unsigned int prevState)
     }
     #elif defined(MA_X86) || defined(MA_X64)
     {
-        #if !(defined(__TINYC__) || defined(__WATCOMC__))   /* <-- Add compilers that lack support for _mm_getcsr() and _mm_setcsr() to this list. */
+        #if defined(__SSE2__) && !(defined(__TINYC__) || defined(__WATCOMC__))   /* <-- Add compilers that lack support for _mm_getcsr() and _mm_setcsr() to this list. */
         {
             _mm_setcsr(prevState);
         }