msi: Fix memory leaks and bad frees.

dlls/msi/appsearch.c

@@ -398,7 +398,7 @@ static UINT ACTION_AppSearchReg(MSIPACKAGE *package, LPWSTR *appValue,
              appValue);
             break;
         case msidbLocatorTypeFileName:
-            *appValue = (LPWSTR)value;
+            *appValue = strdupW((LPCWSTR)value);
             break;
         case msidbLocatorTypeRawValue:
             ACTION_ConvertRegValue(regType, value, sz, appValue);
@@ -996,7 +996,7 @@ UINT ACTION_AppSearch(MSIPACKAGE *package)
         while (!rc)
         {
             MSISIGNATURE sig;
-            LPWSTR value;
+            LPWSTR value = NULL;
 
             rc = MSI_ViewFetch(view,&row);
             if (rc != ERROR_SUCCESS)

dlls/msi/custom.c

@@ -167,7 +167,10 @@ UINT ACTION_CustomAction(MSIPACKAGE *package,LPCWSTR action, BOOL execute)
 
     row = MSI_QueryGetRecord( package->db, ExecSeqQuery, action );
     if (!row)
+    {
+        msi_free(action_copy);
         return ERROR_CALL_NOT_IMPLEMENTED;
+    }
 
     type = MSI_RecordGetInteger(row,2);
 

dlls/msi/database.c

@@ -668,6 +668,7 @@ done:
     msi_free(data);
     msi_free(columns);
     msi_free(types);
+    msi_free(labels);
 
     for (i = 0; i < num_records; i++)
         msi_free(records[i]);