Change the modified parameter in the Clamp function to be a pointer.

Makes it easier to identify the one being modified.

Source/Core/Core/HW/StreamADPCM.cpp

@@ -32,7 +32,7 @@ s16 ADPDecodeSample(s32 bits, s32 q, s32& hist1, s32& hist2)
 		break;
 	}
 	hist = (hist + 0x20) >> 6;
-	MathUtil::Clamp(hist, -0x200000, 0x1fffff);
+	MathUtil::Clamp(&hist, -0x200000, 0x1fffff);
 
 	s32 cur = (((s16)(bits << 12) >> (q & 0xf)) << 6) + hist;
 
@@ -40,7 +40,7 @@ s16 ADPDecodeSample(s32 bits, s32 q, s32& hist1, s32& hist2)
 	hist1 = cur;
 
 	cur >>= 6;
-	MathUtil::Clamp(cur, -0x8000, 0x7fff);
+	MathUtil::Clamp(&cur, -0x8000, 0x7fff);
 
 	return (s16)cur;
 }