shlwapi/tests: Constify some character strings.

dlls/shlwapi/tests/shreg.c

@@ -39,8 +39,8 @@ static DWORD (WINAPI *pSHRegGetPathA)(HKEY,LPCSTR,LPCSTR,LPSTR,DWORD);
 static LSTATUS (WINAPI *pSHRegGetValueA)(HKEY,LPCSTR,LPCSTR,SRRF,LPDWORD,LPVOID,LPDWORD);
 static LSTATUS (WINAPI *pSHRegCreateUSKeyW)(LPCWSTR,REGSAM,HUSKEY,PHUSKEY,DWORD);
 
-static char sTestpath1[] = "%LONGSYSTEMVAR%\\subdir1";
-static char sTestpath2[] = "%FOO%\\subdir1";
+static const char sTestpath1[] = "%LONGSYSTEMVAR%\\subdir1";
+static const char sTestpath2[] = "%FOO%\\subdir1";
 
 static const char * sEnvvar1 = "bar";
 static const char * sEnvvar2 = "ImARatherLongButIndeedNeededString";

dlls/shlwapi/tests/string.c

@@ -433,7 +433,7 @@ static void test_StrCpyW(void)
 
 static void test_StrChrNW(void)
 {
-    static WCHAR string[] = {'T','e','s','t','i','n','g',' ','S','t','r','i','n','g',0};
+    static const WCHAR string[] = {'T','e','s','t','i','n','g',' ','S','t','r','i','n','g',0};
     LPWSTR p;
 
     if (!pStrChrNW)