hush: add function tests

shell/hush_test/hush-z_slow/leak_all1.tests

@@ -27,6 +27,8 @@ HERE
     { : /bin/*; }
     set -- par1_$i par2_$i par3_$i par4_$i
     trap "echo trap$i" WINCH
+    f() { echo $1; }
+    f >/dev/null
     : $((i++))
 done
 
@@ -55,6 +57,8 @@ HERE
     { : /bin/*; }
     set -- par1_$i par2_$i par3_$i par4_$i
     trap "echo trap$i" WINCH
+    f() { echo $1; }
+    f >/dev/null
     : $((i++))
 done
 

shell/hush_test/hush-z_slow/leak_all2.tests

@@ -27,6 +27,8 @@ HERE
 } 1<>/dev/null
 while { echo $dev_null >>$dev_null; }; do cat <"$dev_null"; break; done
 ( until { echo $dev_null >>$dev_null | false; }; do cat <"$dev_null"; break; done ) <$dev_null
+f() { echo $1; }
+f >/dev/null
 
 memleak
 
@@ -53,6 +55,8 @@ HERE
 } 1<>/dev/null
 while { echo $dev_null >>$dev_null; }; do cat <"$dev_null"; break; done
 ( until { echo $dev_null >>$dev_null | false; }; do cat <"$dev_null"; break; done ) <$dev_null
+f() { echo $1; }
+f >/dev/null
 
 # And same again
 
@@ -77,6 +81,8 @@ HERE
 } 1<>/dev/null
 while { echo $dev_null >>$dev_null; }; do cat <"$dev_null"; break; done
 ( until { echo $dev_null >>$dev_null | false; }; do cat <"$dev_null"; break; done ) <$dev_null
+f() { echo $1; }
+f >/dev/null
 
 memleak
 kb=$?