riched20: Write-strings warnings fix.

dlls/riched20/editor.c

@@ -769,7 +769,7 @@ ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int
 
 
 static int
-ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, WCHAR *text, CHARRANGE *chrgText)
+ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, const WCHAR *text, CHARRANGE *chrgText)
 {
   const int nLen = lstrlenW(text);
   const int nTextLen = ME_GetTextLength(editor);
@@ -2675,7 +2675,7 @@ LRESULT WINAPI REExtendedRegisterClass(void)
 int ME_AutoURLDetect(ME_TextEditor *editor, WCHAR curChar) 
 {
   struct prefix_s {
-    char *text;
+    const char *text;
     int length;
   } prefixes[12] = {
     {"http:", 5},

dlls/riched20/tests/editor.c

@@ -44,7 +44,7 @@ static const char haystack[] = "WINEWine wineWine wine WineWine";
 struct find_s {
   int start;
   int end;
-  char *needle;
+  const char *needle;
   int flags;
   int expected_loc;
   int _todo_wine;
@@ -565,7 +565,7 @@ static HWND new_static_wnd(HWND parent) {
 static void test_EM_AUTOURLDETECT(void)
 {
   struct urls_s {
-    char *text;
+    const char *text;
     int is_url;
   } urls[12] = {
     {"winehq.org", 0},

include/richedit.h

@@ -434,25 +434,25 @@ typedef struct _ensaveclipboard {
 
 typedef struct _findtextA {
     CHARRANGE  chrg;
-    LPSTR      lpstrText;
+    LPCSTR     lpstrText;
 } FINDTEXTA;
 
 typedef struct _findtextW {
     CHARRANGE  chrg;
-    LPWSTR     lpstrText;
+    LPCWSTR    lpstrText;
 } FINDTEXTW;
 
 DECL_WINELIB_TYPE_AW(FINDTEXT)
 
 typedef struct _findtextexA {
     CHARRANGE  chrg;
-    LPSTR      lpstrText;
+    LPCSTR     lpstrText;
     CHARRANGE  chrgText;
 } FINDTEXTEXA;
 
 typedef struct _findtextexW {
     CHARRANGE  chrg;
-    LPWSTR     lpstrText;
+    LPCWSTR    lpstrText;
     CHARRANGE  chrgText;
 } FINDTEXTEXW;