[Mod] build: Makefile: Remove -ffast-math in order to avoid warnings …

…with modern Clang. See r15720.

git-svn-id: https://source.openmpt.org/svn/openmpt/branches/OpenMPT-1.29@22445 56274372-70c3-4bfc-bfc3-4c3a0b034d27

Makefile

@@ -347,8 +347,8 @@ CXXFLAGS += -O0 -g -fno-omit-frame-pointer
 CFLAGS   += -O0 -g -fno-omit-frame-pointer
 else
 ifeq ($(OPTIMIZE_SIZE),1)
-CXXFLAGS += -Os -ffast-math
-CFLAGS   += -Os -ffast-math -fno-strict-aliasing
+CXXFLAGS += -Os
+CFLAGS   += -Os -fno-strict-aliasing
 LDFLAGS  += 
 ifeq ($(MPT_COMPILER_NOGCSECTIONS),1)
 else
@@ -358,8 +358,8 @@ LDFLAGS  += -Wl,--gc-sections
 endif
 else
 ifeq ($(OPTIMIZE),1)
-CXXFLAGS += -O3 -ffast-math
-CFLAGS   += -O3 -ffast-math -fno-strict-aliasing
+CXXFLAGS += -O3
+CFLAGS   += -O3 -fno-strict-aliasing
 endif
 endif
 endif