Fix some minor bugs pointed out by PVS Studio (thanks!)

Source/Core/Common/Src/SysConf.cpp

@@ -387,7 +387,7 @@ bool SysConf::SaveToFile(const char *filename)
 		}
 		else if (i->type == Type_SmallArray)
 		{
-			const u8 len = i->dataLength;
+			const u8 len = (u8)(i->dataLength);
 			f.WriteArray(&len, 1);
 		}
 

Source/Core/Core/Src/HW/EXI_DeviceIPL.cpp

@@ -109,7 +109,7 @@ CEXIIPL::CEXIIPL() :
 	if (SConfig::GetInstance().m_LocalCoreStartupParameter.bHLE_BS2)
 	{
 		// Copy header
-		memcpy(m_pIPL, m_bNTSC ? iplverNTSC : iplverPAL, sizeof(m_bNTSC ? iplverNTSC : iplverPAL));
+		memcpy(m_pIPL, m_bNTSC ? iplverNTSC : iplverPAL, m_bNTSC ? sizeof(iplverNTSC) : sizeof(iplverPAL));
 
 		// Load fonts
 		LoadFileToIPL((File::GetSysDirectory() + GC_SYS_DIR + DIR_SEP + FONT_SJIS), 0x1aff00);

Source/Core/Core/Src/PowerPC/Jit64IL/IR.cpp

@@ -1212,7 +1212,7 @@ void IRBuilder::simplifyCommutative(unsigned Opcode, InstLoc& Op1, InstLoc& Op2)
 }
 
 bool IRBuilder::maskedValueIsZero(InstLoc Op1, InstLoc Op2) const {
-	return (~ComputeKnownZeroBits(Op1) & ~ComputeKnownZeroBits(Op1)) == 0;
+	return (~ComputeKnownZeroBits(Op1) & ~ComputeKnownZeroBits(Op2)) == 0;
 }
 
 // Returns I' if I == (0 - I')

Source/Core/Core/Src/PowerPC/PPCAnalyst.cpp

@@ -299,7 +299,7 @@ u32 Flatten(u32 address, int *realsize, BlockStats *st, BlockRegStats *gpa,
 	merged_addresses[0] = address;
 	size_of_merged_addresses = 1;
 
-	memset(st, 0, sizeof(st));
+	memset(st, 0, sizeof(*st));
 	
 	// Disabled the following optimization in preference of FAST_ICACHE
 	//UGeckoInstruction previnst = Memory::Read_Opcode_JIT_LC(address - 4);

Source/Core/VideoCommon/Src/PixelShaderGen.cpp

@@ -158,7 +158,7 @@ void GetPixelShaderId(PIXELSHADERUID *uid, DSTALPHA_MODE dstAlphaMode, u32 compo
 	}
 
 	u32* ptr = &uid->values[2];
-	for (int i = 0; i < bpmem.genMode.numtevstages+1; ++i)
+	for (unsigned int i = 0; i < bpmem.genMode.numtevstages+1; ++i)
 	{
 		StageHash(i, ptr);
 		ptr += 4; // max: ptr = &uid->values[66]

Source/Plugins/Plugin_VideoDX11/Src/D3DUtil.cpp

@@ -595,7 +595,7 @@ void drawShadedTexSubQuad(ID3D11ShaderResourceView* texture,
 
 	// only upload the data to VRAM if it changed
 	if (stsq_observer ||
-		memcmp(rDest, &tex_sub_quad_data.rdest, sizeof(rDest)) != 0 ||
+		memcmp(rDest, &tex_sub_quad_data.rdest, sizeof(*rDest)) != 0 ||
 		tex_sub_quad_data.u1 != u1 || tex_sub_quad_data.v1 != v1 ||
 		tex_sub_quad_data.u2 != u2 || tex_sub_quad_data.v2 != v2 || tex_sub_quad_data.G != G)
 	{

Source/Plugins/Plugin_VideoDX9/Src/D3DUtil.cpp

@@ -383,7 +383,7 @@ void drawShadedTexQuad(IDirect3DTexture9 *texture,
 	float v2=((float)rSource->bottom) * sh;
 	float g = 1.0f/Gamma;
 
-	struct Q2DVertex { float x,y,z,rhw,u,v,w,h,G; } coords[4] = {
+	const struct Q2DVertex { float x,y,z,rhw,u,v,w,h,G; } coords[4] = {
 		{-1.0f - dw,-1.0f + dh, 0.0f,1.0f, u1, v2, sw, sh, g},
 		{-1.0f - dw, 1.0f + dh, 0.0f,1.0f, u1, v1, sw, sh, g},
 		{ 1.0f - dw,-1.0f + dh, 0.0f,1.0f, u2, v2, sw, sh, g},