msvcrt: Simplify throw_exception helper.

dlls/msvcrt/cpp.c

@@ -616,15 +616,11 @@ void msvcrt_init_exception(void *base)
 }
 
 #if _MSVCR_VER >= 80
-void throw_exception(exception_type et, HRESULT hr, const char *str)
+void throw_bad_alloc(void)
 {
-    switch(et) {
-    case EXCEPTION_BAD_ALLOC: {
-        bad_alloc e;
-        __exception_ctor(&e, str, &bad_alloc_vtable);
-        _CxxThrowException(&e, &bad_alloc_exception_type);
-    }
-    }
+    bad_alloc e;
+    __exception_ctor(&e, "bad allocation", &bad_alloc_vtable);
+    _CxxThrowException(&e, &bad_alloc_exception_type);
 }
 #endif
 

dlls/msvcrt/heap.c

@@ -156,7 +156,7 @@ void* CDECL DECLSPEC_HOTPATCH operator_new(size_t size)
 
   TRACE("(%Iu) out of memory\n", size);
 #if _MSVCR_VER >= 80
-  throw_exception(EXCEPTION_BAD_ALLOC, 0, "bad allocation");
+  throw_bad_alloc();
 #endif
   return NULL;
 }

dlls/msvcrt/msvcrt.h

@@ -187,10 +187,7 @@ extern WORD *MSVCRT__pwctype;
 
 void msvcrt_set_errno(int) DECLSPEC_HIDDEN;
 #if _MSVCR_VER >= 80
-typedef enum {
-    EXCEPTION_BAD_ALLOC,
-} exception_type;
-void throw_exception(exception_type, HRESULT, const char*) DECLSPEC_HIDDEN;
+void throw_bad_alloc(void) DECLSPEC_HIDDEN;
 #endif
 
 void __cdecl _purecall(void);