tests: add test fixture for bogus .pc files

Makefile.am

@@ -45,6 +45,7 @@ EXTRA_DIST =	pkg.m4 \
 		tests/lib1/sysroot-dir.pc \
 		tests/lib1/circular-2.pc \
 		tests/lib1/multiline.pc \
+		tests/lib1/multiline-bogus.pc \
 		tests/lib1/tilde-quoting.pc \
 		tests/lib1/circular-3.pc \
 		tests/lib1/no-trailing-newline.pc \

tests/lib1/multiline-bogus.pc

@@ -0,0 +1,9 @@
+prefix=/test
+exec_prefix=${prefix}
+libdir=${prefix}/lib
+includedir=${prefix}/include
+
+Name: multiline
+Description: A multiline
+description blah blah blah
+Version: 1.2.3

tests/parser.sh

@@ -13,6 +13,7 @@ tests_init \
 	tilde_quoting \
 	paren_quoting \
 	multiline_field \
+	multiline_bogus_header \
 	escaped_backslash \
 	flag_order_1 \
 	flag_order_2 \
@@ -117,6 +118,14 @@ multiline_field_body()
 		pkgconf --list-all
 }
 
+multiline_bogus_header_body()
+{
+	export PKG_CONFIG_PATH="${selfdir}/lib1"
+	atf_check \
+		-s eq:0 \
+		pkgconf --exists multiline-bogus
+}
+
 escaped_backslash_body()
 {
 	atf_check \