[APPCOMPAT] Fix a memory leak in a failure case (CID 1401161), a 0-length memset that is detected 3 times (CID 1401069, 1401064, 1401062)

svn path=/trunk/; revision=73999

reactos/dll/appcompat/apphelp/hsdb.c

@@ -65,7 +65,9 @@ HSDB WINAPI SdbInitDatabase(DWORD flags, LPCWSTR path)
             case SDB_DATABASE_MAIN_SHIM: name = shim; break;
             case SDB_DATABASE_MAIN_MSI: name = msi; break;
             case SDB_DATABASE_MAIN_DRIVERS: name = drivers; break;
-            default: return NULL;
+            default:
+                SdbReleaseDatabase(sdb);
+                return NULL;
         }
         SdbGetAppPatchDir(NULL, buffer, 128);
         memcpy(buffer + lstrlenW(buffer), name, SdbpStrlen(name));

reactos/dll/appcompat/shims/shimlib/implement_shim.inl

@@ -39,7 +39,8 @@ PHOOKAPI WINAPI SHIM_OBJ_NAME(GetHookAPIs)(DWORD fdwReason, PCSTR pszCmdLine, PD
         SHIM_OBJ_NAME(g_szCommandLine) = "";
     }
     SHIM_OBJ_NAME(g_pAPIHooks) = ShimLib_ShimMalloc(sizeof(HOOKAPI) * SHIM_NUM_HOOKS);
-    ZeroMemory(SHIM_OBJ_NAME(g_pAPIHooks), sizeof(HOOKAPI) * SHIM_NUM_HOOKS);
+    if (SHIM_NUM_HOOKS)
+        ZeroMemory(SHIM_OBJ_NAME(g_pAPIHooks), sizeof(HOOKAPI) * SHIM_NUM_HOOKS);
     *pdwHookCount = SHIM_NUM_HOOKS;
 
 #ifdef SHIM_NOTIFY_FN