riched20/tests: EM_GETSELTEXT's wparam is not used and should be 0.

dlls/riched20/tests/editor.c

@@ -5094,7 +5094,7 @@ static void test_EM_EXSETSEL(void)
         cr.cpMin = 4; cr.cpMax = 8;
         result =  SendMessageA(hwndRichEdit, EM_EXSETSEL, 0, (LPARAM)&cr);
         ok(result == 8, "EM_EXSETSEL return %Id expected 8\n", result);
-        result = SendMessageA(hwndRichEdit, EM_GETSELTEXT, sizeof(bufA), (LPARAM)bufA);
+        result = SendMessageA(hwndRichEdit, EM_GETSELTEXT, 0, (LPARAM)bufA);
         ok(!strcmp(bufA, "ef\x8e\xf0g"), "EM_GETSELTEXT return incorrect string\n");
         SendMessageA(hwndRichEdit, EM_EXGETSEL, 0, (LPARAM)&cr);
         ok(cr.cpMin == 4, "Selection start incorrectly: %ld expected 4\n", cr.cpMin);
@@ -5169,7 +5169,7 @@ static void test_EM_SETSEL(void)
         /*                                                 012345     6  78901 */
         result =  SendMessageA(hwndRichEdit, EM_SETSEL, 4, 8);
         ok(result == 8, "EM_SETSEL return %Id expected 8\n", result);
-        result = SendMessageA(hwndRichEdit, EM_GETSELTEXT, sizeof(buffA), (LPARAM)buffA);
+        result = SendMessageA(hwndRichEdit, EM_GETSELTEXT, 0, (LPARAM)buffA);
         ok(!strcmp(buffA, "ef\x8e\xf0g"), "EM_GETSELTEXT return incorrect string\n");
         result = SendMessageA(hwndRichEdit, EM_GETSEL, (WPARAM)&sel_start, (LPARAM)&sel_end);
         ok(sel_start == 4, "Selection start incorrectly: %d expected 4\n", sel_start);

dlls/riched20/tests/richole.c

@@ -4068,7 +4068,7 @@ static void subtest_InsertObject(struct reolecb_obj *callback)
   expected_stringA = "abc d efg";
   memset(bufferA, 0, sizeof(bufferA));
   SendMessageA(hwnd, EM_SETSEL, 0, -1);
-  result = SendMessageA(hwnd, EM_GETSELTEXT, (WPARAM)sizeof(bufferA), (LPARAM)bufferA);
+  result = SendMessageA(hwnd, EM_GETSELTEXT, 0, (LPARAM)bufferA);
   ok(result == strlen(expected_stringA), "Got wrong length: %ld.\n", result);
   ok(!strcmp(bufferA, expected_stringA), "Got wrong content: %s.\n", bufferA);
 
@@ -4151,7 +4151,7 @@ static void subtest_InsertObject(struct reolecb_obj *callback)
   expected_stringA = "abc d efg";
   memset(bufferA, 0, sizeof(bufferA));
   SendMessageA(hwnd, EM_SETSEL, 0, -1);
-  result = SendMessageA(hwnd, EM_GETSELTEXT, (WPARAM)sizeof(bufferA), (LPARAM)bufferA);
+  result = SendMessageA(hwnd, EM_GETSELTEXT, 0, (LPARAM)bufferA);
   ok(result == strlen(expected_stringA), "Got wrong length: %ld.\n", result);
   ok(!strcmp(bufferA, expected_stringA), "Got wrong content: %s.\n", bufferA);