msi/tests: Fix test failures.

dlls/msi/tests/package.c

@@ -4055,6 +4055,15 @@ static void test_appsearch(void)
     r = RegCreateKeyExA(HKEY_LOCAL_MACHINE, "Software\\Winetest_msi", 0, NULL, 0, KEY_ALL_ACCESS|KEY_WOW64_32KEY,
                         NULL, &hkey, NULL);
     ok( r == ERROR_SUCCESS, "Could not create key: %d.\n", r );
+    if (r == ERROR_ACCESS_DENIED)
+    {
+        skip("insufficient rights\n");
+        RegDeleteKeyA(HKEY_CURRENT_USER, "Software\\Winetest_msi");
+        MsiCloseHandle(hdb);
+        DeleteFileA(msifile);
+        return;
+    }
+
     r = RegSetValueExA(hkey, NULL, 0, REG_SZ, (const BYTE *)"c:\\windows\\system32\\notepad.exe",
                        sizeof("c:\\windows\\system32\\notepad.exe"));
     ok( r == ERROR_SUCCESS, "Could not set key value: %d.\n", r);

dlls/msi/tests/source.c

@@ -31,6 +31,7 @@
 #include <objbase.h>
 
 #include "wine/test.h"
+#include "utils.h"
 
 static BOOL is_wow64;
 
@@ -686,6 +687,11 @@ static void test_MsiSourceListAddSourceEx(void)
         win_skip("Skipping MsiSourceListAddSourceExA tests\n");
         return;
     }
+    if (is_process_limited())
+    {
+        skip("process is limited\n");
+        return;
+    }
 
     create_test_guid(prodcode, prod_squashed);
     if (!(usersid = get_user_sid()))
@@ -1695,6 +1701,11 @@ static void test_MsiSourceListSetInfo(void)
         win_skip("MsiSourceListSetInfoA is not available\n");
         return;
     }
+    if (is_process_limited())
+    {
+        skip("process is limited\n");
+        return;
+    }
 
     create_test_guid(prodcode, prod_squashed);
     if (!(usersid = get_user_sid()))
@@ -2126,6 +2137,11 @@ static void test_MsiSourceListAddMediaDisk(void)
         win_skip("MsiSourceListAddMediaDiskA is not available\n");
         return;
     }
+    if (is_process_limited())
+    {
+        skip("process is limited\n");
+        return;
+    }
 
     create_test_guid(prodcode, prod_squashed);
     if (!(usersid = get_user_sid()))
@@ -3277,6 +3293,11 @@ static void test_MsiSourceListAddSource(void)
         win_skip("Skipping MsiSourceListAddSourceA tests\n");
         return;
     }
+    if (is_process_limited())
+    {
+        skip("process is limited\n");
+        return;
+    }
 
     create_test_guid(prodcode, prod_squashed);
     if (!(usersid = get_user_sid()))