mkproto.sh: export LC_ALL instead of setting in-line

Hope that fixes the flatpak-build regression.

src/libc/dj64/parsers/mkproto.sh

@@ -43,13 +43,21 @@ extr_proto() {
 }
 
 list_syms() {
-    LC_ALL=C nm -A "$1" | grep " $2 " | tr -s '[:blank:]' | cut -d " " -f 3 | \
+    saved_LA=$LC_ALL
+    export LC_ALL=C
+    nm -A "$1" | grep " $2 " | tr -s '[:blank:]' | cut -d " " -f 3 | \
 	sed 's/^_//'
+    echo nm returned $?
+    export LC_ALL=$saved_LA
 }
 
 list_syms2() {
-    LC_ALL=C nm -A "$1" | grep -E " $2 "\|" $3 " | tr -s '[:blank:]' | cut -d " " -f 3 | \
+    saved_LA=$LC_ALL
+    export LC_ALL=C
+    nm -A "$1" | grep -E " $2 "\|" $3 " | tr -s '[:blank:]' | cut -d " " -f 3 | \
 	sed 's/^_//'
+    echo nm returned $?
+    export LC_ALL=$saved_LA
 }
 
 TF=/tmp/tagsxx