ninja backend: Make values passed to bool argument consistent

mesonbuild/backend/ninjabackend.py

@@ -970,8 +970,7 @@ class NinjaBackend(backends.Backend):
             if self.environment.is_llvm_ir(src):
                 o, s = self.generate_llvm_ir_compile(target, src)
             else:
-                o, s = self.generate_single_compile(target, src, True,
-                                                    order_deps=header_deps)
+                o, s = self.generate_single_compile(target, src, True, order_deps=header_deps)
             compiled_sources.append(s)
             source2object[s] = o
             obj_list.append(o)
@@ -1018,7 +1017,7 @@ class NinjaBackend(backends.Backend):
             # Passing 'vala' here signifies that we want the compile
             # arguments to be specialized for C code generated by
             # valac. For instance, no warnings should be emitted.
-            o, s = self.generate_single_compile(target, src, 'vala', [], header_deps)
+            o, s = self.generate_single_compile(target, src, True, [], header_deps)
             obj_list.append(o)
 
         # Generate compile targets for all the preexisting sources for this target
@@ -2908,7 +2907,7 @@ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47485'''))
         return src_type_to_args
 
     def generate_single_compile(self, target: build.BuildTarget, src,
-                                is_generated=False, header_deps=None,
+                                is_generated: bool = False, header_deps=None,
                                 order_deps: T.Optional[T.List['mesonlib.FileOrString']] = None,
                                 extra_args: T.Optional[T.List[str]] = None,
                                 unity_sources: T.Optional[T.List[mesonlib.FileOrString]] = None) -> None: