Fix error suppression macro

My previous fix triggered another issue: apparently at least GCC expects
the `_Pragma` operator to be placed in its own statement (after a
semicolon). The current macro simply dumped the expression and the
_Pragma together, triggering an error. Putting a semicolon after `Expr`
fixes the issue (actually double-checked after a `git clean -fdx`),
although slightly changing the API (the semicolon after the wrapped
macros is now optional).

public/tracy/Tracy.hpp

@@ -155,19 +155,19 @@
     #define SuppressVarShadowWarning(Expr) \
         _Pragma("clang diagnostic push") \
         _Pragma("clang diagnostic ignored \"-Wshadow\"") \
-        Expr \
+        Expr; \
         _Pragma("clang diagnostic pop")
 #elif defined(__GNUC__)
     #define SuppressVarShadowWarning(Expr) \
         _Pragma("GCC diagnostic push") \
         _Pragma("GCC diagnostic ignored \"-Wshadow\"") \
-        Expr \
+        Expr; \
         _Pragma("GCC diagnostic pop")
 #elif defined(_MSC_VER) 
     #define SuppressVarShadowWarning(Expr) \
         _Pragma("warning(push)") \
         _Pragma("warning(disable : 4456)") \
-        Expr \
+        Expr; \
         _Pragma("warning(pop)")
 #else
     #define SuppressVarShadowWarning(Expr) Expr