test: Fix short lived memory leaks

These are non-issues, but having a clean ASAN test suite makes it
possible to detect actual problems in the tested code.

Warned-by: gcc ASAN

test/fgetln.c

@@ -61,6 +61,7 @@ static const wchar_t *data_wide[] = {
 
 struct file {
 	FILE *fp;
+	void *line_alloc;
 	const void **lines;
 
 	const void *got_buf;
@@ -97,6 +98,7 @@ test_fgetln_multi(void)
 		str = strdup("A\n");
 		str[0] += i;
 
+		files[i].line_alloc = str;
 		files[i].lines = reallocarray(NULL, LINE_COUNT, sizeof(char *));
 		files[i].lines[0] = str;
 		files[i].lines[1] = str;
@@ -123,8 +125,11 @@ test_fgetln_multi(void)
 		}
 	}
 
-	for (i = 0; i < LINE_COUNT; i++)
+	for (i = 0; i < FILE_COUNT; i++) {
+		free(files[i].line_alloc);
+		free(files[i].lines);
 		pipe_close(files[i].fp);
+	}
 }
 
 static void
@@ -159,6 +164,7 @@ test_fgetwln_multi(void)
 		wstr = wcsdup(L"A\n");
 		wstr[0] += i;
 
+		files[i].line_alloc = wstr;
 		files[i].lines = reallocarray(NULL, LINE_COUNT, sizeof(char *));
 		files[i].lines[0] = wstr;
 		files[i].lines[1] = wstr;
@@ -185,8 +191,11 @@ test_fgetwln_multi(void)
 		}
 	}
 
-	for (i = 0; i < LINE_COUNT; i++)
+	for (i = 0; i < FILE_COUNT; i++) {
+		free(files[i].line_alloc);
+		free(files[i].lines);
 		pipe_close(files[i].fp);
+	}
 }
 
 static void

test/setmode.c

@@ -25,19 +25,31 @@
  */
 
 #include <assert.h>
+#include <stdlib.h>
 #include <unistd.h>
 
 int
 main(int argc, char **argv)
 {
+	void *set;
+
 	umask(0);
 
-	assert(getmode(setmode("0"), 0) == 0);
+	set = setmode("0");
+	assert(getmode(set, 0) == 0);
+	free(set);
+
+	set = setmode("7777");
+	assert(getmode(set, 0) == 07777);
+	free(set);
 
-	assert(getmode(setmode("7777"), 0) == 07777);
-	assert(getmode(setmode("1555"), 0) == 01555);
+	set = setmode("1555");
+	assert(getmode(set, 0) == 01555);
+	free(set);
 
-	assert(getmode(setmode("ugo=rwx"), 0) == 0777);
+	set = setmode("ugo=rwx");
+	assert(getmode(set, 0) == 0777);
+	free(set);
 
 	/* FIXME: Complete unit tests. */