SystemRegisters: Get rid of pointer casting

Source/Core/Core/PowerPC/Interpreter/Interpreter_SystemRegisters.cpp

@@ -3,6 +3,9 @@
 // Refer to the license.txt file included.
 
 #include "Core/PowerPC/Interpreter/Interpreter.h"
+
+#include <cstring>
+
 #include "Common/Assert.h"
 #include "Common/CommonTypes.h"
 #include "Common/FPURoundMode.h"
@@ -216,8 +219,11 @@ void Interpreter::mfspr(UGeckoInstruction _inst)
 
   case SPR_TL:
   case SPR_TU:
-    *((u64*)&TL) =
-        SystemTimers::GetFakeTimeBase();  // works since we are little endian and TL comes first :)
+  {
+    // works since we are little endian and TL comes first :)
+    const u64 time_base = SystemTimers::GetFakeTimeBase();
+    std::memcpy(&TL, &time_base, sizeof(u64));
+  }
   break;
 
   case SPR_WPAR: