Fix compilation errors on some compilers

renderdoc/api/replay/rdcstr.h

@@ -1034,6 +1034,7 @@ public:
   rdcinflexiblestr(const rdcliteral &lit)
   {
     pointer = (intptr_t)lit.c_str();
+    is_literal = 0;
     is_literal |= 0x1;
   }
   rdcinflexiblestr &operator=(const rdcliteral &in)

renderdoc/driver/vulkan/vk_shaderdebug.cpp

@@ -4298,7 +4298,8 @@ ShaderDebugTrace *VulkanReplay::DebugPixel(uint32_t eventId, uint32_t x, uint32_
   // buffer, we'd still want to spec-constant the address when possible so we're always going to
   // have some varying value.
   VkPipeline inputsPipe;
-  vkr = m_pDriver->vkCreateGraphicsPipelines(dev, NULL, 1, &graphicsInfo, NULL, &inputsPipe);
+  vkr =
+      m_pDriver->vkCreateGraphicsPipelines(dev, VK_NULL_HANDLE, 1, &graphicsInfo, NULL, &inputsPipe);
   RDCASSERTEQUAL(vkr, VK_SUCCESS);
 
   // make copy of state to draw from