Fix missing null terminator when calling execv() on modprobe (#13054)

Author: OneBlue

src/linux/init/main.cpp

@@ -3383,7 +3383,7 @@ try
             const std::string KernelModulesList = wsl::shared::string::FromSpan(Buffer, EarlyConfig->KernelModulesListOffset);
             for (const auto& Module : wsl::shared::string::Split(KernelModulesList, ','))
             {
-                const char* Argv[] = {MODPROBE_PATH, Module.c_str()};
+                const char* Argv[] = {MODPROBE_PATH, Module.c_str(), nullptr};
                 int Status = -1;
                 auto result = UtilCreateProcessAndWait(MODPROBE_PATH, Argv, &Status);
                 if (result < 0)

src/linux/init/util.cpp

@@ -682,7 +682,7 @@ Return Value:
         // 2. In sometime we probably will replace most of these string constants
         // with std::string anyway.
         execv(File, const_cast<char* const*>(Argv));
-        LOG_ERROR("{} failed with {}", File, errno);
+        LOG_ERROR("execv({}) failed with {}", File, errno);
         exit(-1);
     }