Remove extra semicolons

Fix various "extra ';'" compiler warnings.

No functional changes.

Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>

glslang/MachineIndependent/propagateNoContraction.h

@@ -52,4 +52,5 @@ namespace glslang {
 // 'noContraction' means the object is 'precise'; and for arithmetic operation
 // nodes, it means the operation should not be contracted.
 void PropagateNoContraction(const glslang::TIntermediate& intermediate);
-};
+
+} // end namespace glslang