add throw for consistency

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/WarningsModuleBuiltins.java

@@ -895,7 +895,7 @@ static PNone mutate(PythonModule self,
             try {
                 version = dylib.getLongOrDefault(self, FILTERS_VERSION, 0);
             } catch (UnexpectedResultException e) {
-                CompilerDirectives.shouldNotReachHere();
+                throw CompilerDirectives.shouldNotReachHere();
             }
             dylib.putLong(self, FILTERS_VERSION, version + 1);
             return PNone.NONE;

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/object/DefaultPythonObjectExports.java

@@ -417,7 +417,7 @@ static Object doGeneric(Object receiver, ThreadState threadState,
                 try {
                     return lib.getIterator(receiver);
                 } catch (UnsupportedMessageException e) {
-                    CompilerDirectives.shouldNotReachHere();
+                    throw CompilerDirectives.shouldNotReachHere();
                 }
             } else if (lib.hasArrayElements(receiver)) {
                 return doForeignArray(receiver, threadState, factory, raiseNode, lib);

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/statement/RaiseNode.java

@@ -212,7 +212,7 @@ static void doRaise(VirtualFrame frame, Object exception, Object cause,
             try {
                 throw lib.throwException(exception);
             } catch (UnsupportedMessageException e) {
-                CompilerDirectives.shouldNotReachHere();
+                throw CompilerDirectives.shouldNotReachHere();
             }
         }
         throw raiseNoException(raise);