File _service:obs_scm:0007-all-Fix-resource-leaks.patch of Package thin-provisioning-tools

From f7e4a8faa920a1d9746b056e9820da13b5b488e7 Mon Sep 17 00:00:00 2001
From: Ming-Hung Tsai <mtsai@redhat.com>
Date: Wed, 28 Apr 2021 10:34:16 +0800
Subject: [PATCH] [all] Fix resource leaks

---
 base/file_utils.cc                | 4 +++-
 thin-provisioning/cache_stream.cc | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/base/file_utils.cc b/base/file_utils.cc
index e4f37228..82536608 100644
--- a/base/file_utils.cc
+++ b/base/file_utils.cc
@@ -155,8 +155,10 @@ file_utils::zero_superblock(std::string const &path)
         	throw runtime_error("out of memory");
 
 	memset(buffer, 0, SUPERBLOCK_SIZE);
-	if (::write(fd.fd_, buffer, SUPERBLOCK_SIZE) != SUPERBLOCK_SIZE)
+	if (::write(fd.fd_, buffer, SUPERBLOCK_SIZE) != SUPERBLOCK_SIZE) {
+		free(buffer);
 		throw runtime_error("couldn't zero superblock");
+	}
 }
 
 //----------------------------------------------------------------
diff --git a/thin-provisioning/cache_stream.cc b/thin-provisioning/cache_stream.cc
index 002b6ba9..73b01b4e 100644
--- a/thin-provisioning/cache_stream.cc
+++ b/thin-provisioning/cache_stream.cc
@@ -62,7 +62,7 @@ chunk const &
 cache_stream::get()
 {
 	chunk_wrapper *w = new chunk_wrapper(*this);
-	return w->c_;
+	return w->c_; // wrapper will get freed by the put method
 }
 
 void