Add missing BuildRequires on gcc

configure: error: no acceptable C compiler found in $PATH

References: https://bugzilla.redhat.com/show_bug.cgi?id=1603627
Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

cdparanoia.spec

@@ -21,6 +21,7 @@ Patch5: cdparanoia-10.2-ldflags.patch
 
 Requires: %{name}-libs%{?_isa} = %{version}-%{release}
 
+BuildRequires:  gcc
 %description 
 Cdparanoia (Paranoia III) reads digital audio directly from a CD, then
 writes the data to a file or pipe in WAV, AIFC or raw 16 bit linear