oe-init-build-env: add quotes around variables to prevent word splitting

Used shellcheck to add quotes to the variables. This is to make sure that
directories with names that have space between, such as
"Desktop/projects/test repo/poky" will not be considered as 2 separate
words. With this modification, running the command "source
oe-init-build-env" will not give the error "bash: oe-init-build-env: No
such file or directory"

(From OE-Core rev: b07a70fbf78f2beba639580e37dffbc0a73bc99f)

Signed-off-by: Abongwa Bonalais Amahnui <abongwabonalais@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

oe-init-build-env

@@ -42,8 +42,8 @@ fi
 unset THIS_SCRIPT
 
 export OEROOT
-. $OEROOT/scripts/oe-buildenv-internal &&
-    TEMPLATECONF="$TEMPLATECONF" $OEROOT/scripts/oe-setup-builddir || {
+. "$OEROOT"/scripts/oe-buildenv-internal &&
+    TEMPLATECONF="$TEMPLATECONF" "$OEROOT"/scripts/oe-setup-builddir || {
     unset OEROOT
     return 1
 }

scripts/oe-setup-builddir

@@ -42,7 +42,7 @@ if [ -f "$BUILDDIR/conf/templateconf.cfg" ]; then
     TEMPLATECONF=$(cat "$BUILDDIR/conf/templateconf.cfg")
 fi
 
-. $OEROOT/.templateconf
+. "$OEROOT"/.templateconf
 
 if [ ! -f "$BUILDDIR/conf/templateconf.cfg" ]; then
     echo "$TEMPLATECONF" >"$BUILDDIR/conf/templateconf.cfg"
@@ -79,7 +79,7 @@ example, select a different MACHINE (target hardware). See conf/local.conf
 for more information as common configuration options are commented.
 
 EOM
-    cp -f $OECORELOCALCONF "$BUILDDIR/conf/local.conf"
+    cp -f "$OECORELOCALCONF" "$BUILDDIR/conf/local.conf"
     SHOWYPDOC=yes
 fi
 
@@ -100,7 +100,7 @@ EOM
     # to replace it for compatibility.
     sed -e "s|##OEROOT##|$OEROOT|g" \
         -e "s|##COREBASE##|$OEROOT|g" \
-        $OECORELAYERCONF > "$BUILDDIR/conf/bblayers.conf"
+        "$OECORELAYERCONF" > "$BUILDDIR/conf/bblayers.conf"
     SHOWYPDOC=yes
 fi
 
@@ -125,5 +125,5 @@ fi
 if [ -z "$OECORENOTESCONF" ]; then
     OECORENOTESCONF="$OEROOT/meta/conf/conf-notes.txt"
 fi
-[ ! -r "$OECORENOTESCONF" ] || cat $OECORENOTESCONF
+[ ! -r "$OECORENOTESCONF" ] || cat "$OECORENOTESCONF"
 unset OECORENOTESCONF