oe-init-build-env*: Make them actually return failures

If either of the internal scripts (oe-buildenv-internal and
oe-setup-builddir) failed, oe-init-build-env (and
oe-init-build-env-memres) would still return success.

(From OE-Core rev: 40764c7039f1ee161916d4fbf7dfe15fb964030e)

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

oe-init-build-env

@@ -48,11 +48,15 @@ fi
 unset THIS_SCRIPT
 
 export OEROOT
-. $OEROOT/scripts/oe-buildenv-internal && \
-    TEMPLATECONF="$TEMPLATECONF" $OEROOT/scripts/oe-setup-builddir && \
-    [ -n "$BUILDDIR" ] && cd "$BUILDDIR"
+. $OEROOT/scripts/oe-buildenv-internal &&
+    TEMPLATECONF="$TEMPLATECONF" $OEROOT/scripts/oe-setup-builddir || {
+    unset OEROOT
+    return 1
+}
 unset OEROOT
 
+[ -z "$BUILDDIR" ] || cd "$BUILDDIR"
+
 # Shutdown any bitbake server if the BBSERVER variable is not set
 if [ -z "$BBSERVER" ] && [ -f bitbake.lock ]; then
     grep ":" bitbake.lock > /dev/null && BBSERVER=$(cat bitbake.lock) bitbake --status-only

oe-init-build-env-memres

@@ -56,11 +56,15 @@ fi
 unset THIS_SCRIPT
 
 export OEROOT
-. $OEROOT/scripts/oe-buildenv-internal && \
-    TEMPLATECONF="$TEMPLATECONF" $OEROOT/scripts/oe-setup-builddir && \
-    [ -n "$BUILDDIR" ] && cd "$BUILDDIR"
+. $OEROOT/scripts/oe-buildenv-internal &&
+    TEMPLATECONF="$TEMPLATECONF" $OEROOT/scripts/oe-setup-builddir || {
+    unset OEROOT
+    return 1
+}
 unset OEROOT
 
+[ -z "$BUILDDIR" ] || cd "$BUILDDIR"
+
 res=1
 if [ -e bitbake.lock ] && grep : bitbake.lock > /dev/null; then
     BBSERVER=$(cat bitbake.lock) bitbake --status-only