Zero-initialize CPU state and register view

Source/Core/Core/PowerPC/PowerPC.cpp

@@ -30,7 +30,7 @@
 namespace PowerPC
 {
 // STATE_TO_SAVE
-PowerPCState ppcState;
+PowerPCState ppcState{};
 
 static CPUCoreBase* s_cpu_core_base = nullptr;
 static bool s_cpu_core_base_is_injected = false;

Source/Core/DolphinQt/Debugger/RegisterColumn.h

@@ -67,6 +67,6 @@ private:
   std::function<u64()> m_get_register;
   std::function<void(u64)> m_set_register;
 
-  u64 m_value;
+  u64 m_value = 0;
   RegisterDisplay m_display = RegisterDisplay::Hex;
 };