win-capture: Avoid NULL deref when capture not initialized

plugins/win-capture/graphics-hook/d3d10-capture.cpp

@@ -279,7 +279,9 @@ static inline void d3d10_copy_texture(ID3D10Resource *dst, ID3D10Resource *src)
 
 static inline void d3d10_shtex_capture(ID3D10Resource *backbuffer)
 {
-	d3d10_copy_texture(data.texture, backbuffer);
+	if (data.texture) {
+		d3d10_copy_texture(data.texture, backbuffer);
+	}
 }
 
 static void d3d10_shmem_capture_copy(int i)

plugins/win-capture/graphics-hook/d3d11-capture.cpp

@@ -247,7 +247,9 @@ static inline void d3d11_copy_texture(ID3D11Resource *dst, ID3D11Resource *src)
 
 static inline void d3d11_shtex_capture(ID3D11Resource *backbuffer)
 {
-	d3d11_copy_texture(data.texture, backbuffer);
+	if (data.texture) {
+		d3d11_copy_texture(data.texture, backbuffer);
+	}
 }
 
 static void d3d11_shmem_capture_copy(int i)

plugins/win-capture/graphics-hook/d3d12-capture.cpp

@@ -271,6 +271,10 @@ static inline void d3d12_copy_texture(ID3D11Resource *dst, ID3D11Resource *src)
 
 static inline void d3d12_shtex_capture(IDXGISwapChain *swap)
 {
+	if (!data.device11on12) {
+		return;
+	}
+
 	bool dxgi_1_4 = data.dxgi_1_4;
 	UINT cur_idx;
 

shared/obs-hook-config/graphics-hook-ver.h

@@ -13,7 +13,7 @@
 
 #define HOOK_VER_MAJOR 1
 #define HOOK_VER_MINOR 8
-#define HOOK_VER_PATCH 5
+#define HOOK_VER_PATCH 6
 
 #ifndef STRINGIFY
 #define STRINGIFY(s) #s