make QProcessEnvironment on Unix cache converted values

values are converted between byte arrays and qstrings on demand.
this makes it feasible to use the class as a generic environment container
with fast reading and writing access.

Reviewed-by: thiago
Reviewed-by: dt
(cherry picked from commit 7aa4ecdedba60ac4cbc07a774ae9d834677002e9)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/corelib/io/qprocess_unix.cpp b/src/corelib/io/qprocess_unix.cpp
index 4e50bc546b..7a9e75d534 100644
--- a/src/corelib/io/qprocess_unix.cpp
+++ b/src/corelib/io/qprocess_unix.cpp
@@ -510,7 +510,7 @@ static char **_q_dupEnvironment(const QProcessEnvironmentPrivate::Hash &environm
     const QProcessEnvironmentPrivate::Hash::ConstIterator end = environment.constEnd();
     for ( ; it != end; ++it) {
         QByteArray key = it.key().key;
-        QByteArray value = it.value();
+        QByteArray value = it.value().bytes();
         key.reserve(key.length() + 1 + value.length());
         key.append('=');
         key.append(value);